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86972744472 = 2337189573487
BaseRepresentation
bin101000011111111111…
…0101100001100011000
322022111021120012020020
41100333332230030120
52411110010310342
6103542115430440
76166160062455
oct1207776541430
9268437505206
1086972744472
1133980935219
1214a32bb5420
1382808b7013
1442d0c3c82c
1523e07020ec
hex143ffac318

86972744472 has 64 divisors (see below), whose sum is σ = 222972134400. Its totient is φ = 28261390080.

The previous prime is 86972744389. The next prime is 86972744477. The reversal of 86972744472 is 27444727968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86972744477) 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, 135088 + ... + 438399.

It is an arithmetic number, because the mean of its divisors is an integer number (3483939600).

Almost surely, 286972744472 is an apocalyptic number.

It is an amenable number.

86972744472 is an abundant number, since it is smaller than the sum of its proper divisors (135999389928).

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

86972744472 is a wasteful number, since it uses less digits than its factorization.

86972744472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573656 (or 573652 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 60.

The spelling of 86972744472 in words is "eighty-six billion, nine hundred seventy-two million, seven hundred forty-four thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 71 89 142 178 213 267 284 356 426 534 568 712 852 1068 1704 2136 6319 12638 18957 25276 37914 50552 75828 151656 573487 1146974 1720461 2293948 3440922 4587896 6881844 13763688 40717577 51040343 81435154 102080686 122152731 153121029 162870308 204161372 244305462 306242058 325740616 408322744 488610924 612484116 977221848 1224968232 3623864353 7247728706 10871593059 14495457412 21743186118 28990914824 43486372236 86972744472