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80312320032 = 2537167715643
BaseRepresentation
bin100101011001011111…
…1001100000000100000
321200022002210120112120
41022302333030000200
52303434423220112
6100521151424240
75542133312430
oct1126277140040
9250262716476
1080312320032
113107323580a
1213694525080
13775ba57479
143c5c4382c0
152150b12e8c
hex12b2fcc020

80312320032 has 96 divisors (see below), whose sum is σ = 242380035072. Its totient is φ = 22808941824.

The previous prime is 80312320021. The next prime is 80312320037. The reversal of 80312320032 is 23002321308.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 80312319984 and 80312320011.

It is not an unprimeable number, because it can be changed into a prime (80312320037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245598 + ... + 470045.

It is an arithmetic number, because the mean of its divisors is an integer number (2524792032).

Almost surely, 280312320032 is an apocalyptic number.

It is an amenable number.

80312320032 is an abundant number, since it is smaller than the sum of its proper divisors (162067715040).

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

80312320032 is a wasteful number, since it uses less digits than its factorization.

80312320032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715830 (or 715822 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 80312320032 in words is "eighty billion, three hundred twelve million, three hundred twenty thousand, thirty-two".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 167 168 224 334 336 501 668 672 1002 1169 1336 2004 2338 2672 3507 4008 4676 5344 7014 8016 9352 14028 16032 18704 28056 37408 56112 112224 715643 1431286 2146929 2862572 4293858 5009501 5725144 8587716 10019002 11450288 15028503 17175432 20038004 22900576 30057006 34350864 40076008 60114012 68701728 80152016 119512381 120228024 160304032 239024762 240456048 358537143 478049524 480912096 717074286 836586667 956099048 1434148572 1673173334 1912198096 2509760001 2868297144 3346346668 3824396192 5019520002 5736594288 6692693336 10039040004 11473188576 13385386672 20078080008 26770773344 40156160016 80312320032