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87712092 = 22331362473
BaseRepresentation
bin1010011101001…
…10000101011100
320010001020101000
411032212011130
5134423241332
612411550300
72113353246
oct516460534
9203036330
1087712092
1145569436
122545b390
1315230760
14b913096
157a78b7c
hex53a615c

87712092 has 48 divisors (see below), whose sum is σ = 244898080. Its totient is φ = 26987904.

The previous prime is 87712091. The next prime is 87712111. The reversal of 87712092 is 29021778.

It is a super-2 number, since 2×877120922 = 15386822166032928, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87712091) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29833 + ... + 32640.

Almost surely, 287712092 is an apocalyptic number.

It is an amenable number.

87712092 is an abundant number, since it is smaller than the sum of its proper divisors (157185988).

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

87712092 is a wasteful number, since it uses less digits than its factorization.

87712092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62499 (or 62491 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 87712092 is about 9365.4733996739. The cubic root of 87712092 is about 444.3104111293.

The spelling of 87712092 in words is "eighty-seven million, seven hundred twelve thousand, ninety-two".

Divisors: 1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 702 1404 62473 124946 187419 249892 374838 562257 749676 812149 1124514 1624298 1686771 2249028 2436447 3248596 3373542 4872894 6747084 7309341 9745788 14618682 21928023 29237364 43856046 87712092