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13090007808 = 28331893809
BaseRepresentation
bin11000011000011100…
…11010101100000000
31020210021011021222000
430030032122230000
5203302020222213
610002524144000
7642245142033
oct141416325400
936707137860
1013090007808
115607a71679
122653998000
131307c27367
148c26b901a
155192d0c73
hex30c39ab00

13090007808 has 72 divisors (see below), whose sum is σ = 38709476400. Its totient is φ = 4363333632.

The previous prime is 13090007783. The next prime is 13090007831. The reversal of 13090007808 is 80870009031.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939993 + ... + 953816.

Almost surely, 213090007808 is an apocalyptic number.

13090007808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13090007808 is an abundant number, since it is smaller than the sum of its proper divisors (25619468592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13090007808 is an equidigital number, since it uses as much as digits as its factorization.

13090007808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893834 (or 1893814 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 13090007808 in words is "thirteen billion, ninety million, seven thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 256 288 384 432 576 768 864 1152 1728 2304 3456 6912 1893809 3787618 5681427 7575236 11362854 15150472 17044281 22725708 30300944 34088562 45451416 51132843 60601888 68177124 90902832 102265686 121203776 136354248 181805664 204531372 242407552 272708496 363611328 409062744 484815104 545416992 727222656 818125488 1090833984 1454445312 1636250976 2181667968 3272501952 4363335936 6545003904 13090007808