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87997068492 = 22331723132773
BaseRepresentation
bin101000111110100001…
…0001011010011001100
322102010200000020121220
41101331002023103030
52420204222142432
6104231510323340
76233435512044
oct1217502132314
9272120006556
1087997068492
1134357061aa3
121507a059550
1383b4b8c7c8
14438acbc724
1524505da72c
hex147d08b4cc

87997068492 has 24 divisors (see below), whose sum is σ = 205974219696. Its totient is φ = 29239823808.

The previous prime is 87997068487. The next prime is 87997068527. The reversal of 87997068492 is 29486079978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11562583 + ... + 11570190.

It is an arithmetic number, because the mean of its divisors is an integer number (8582259154).

Almost surely, 287997068492 is an apocalyptic number.

It is an amenable number.

87997068492 is an abundant number, since it is smaller than the sum of its proper divisors (117977151204).

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

87997068492 is a wasteful number, since it uses less digits than its factorization.

87997068492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23133097 (or 23133095 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 69.

The spelling of 87997068492 in words is "eighty-seven billion, nine hundred ninety-seven million, sixty-eight thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 317 634 951 1268 1902 3804 23132773 46265546 69398319 92531092 138796638 277593276 7333089041 14666178082 21999267123 29332356164 43998534246 87997068492