1 M (where M is ambiguously 1,000,000 or 1,048,576) is less uncertain than the engineering value 1.0e6 (defined to designate the interval 950,000 to 1,050,000).
wˈʌn ˈɛm wˌɛɹ ˈɛm ɪz æmbˈɪɡjuːəsli wˈʌn,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ ɔːɹ wˈʌn,zˈiəɹoʊ fˈoːɹɾi ˈeɪt,fˈaɪvhˈʌndɹɪd sˈɛvənti sˈɪks ɪz lˈɛs ʌnsˈɜːʔn̩ ðɐn ðɪ ˌɛndʒɪnˈɪɹɪŋ vˈæljuː wˈʌn.zˈiəɹoʊ ˈiː sˈɪks dᵻfˈaɪnd tə dˈɛzɪɡnˌeɪt ðɪ ˈɪntɚvəl nˈaɪnhˈʌndɹɪd fˈɪfti,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ tə wˈʌn,zˈiəɹoʊ fˈɪfti,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ.