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87706068 = 22331435483
BaseRepresentation
bin1010011101001…
…00100111010100
320010000221002220
411032210213110
5134423043233
612411502340
72113326552
oct516444724
9203027086
1087706068
114556495a
12254579b0
131522aaa8
14b910bd2
157a76eb3
hex53a49d4

87706068 has 48 divisors (see below), whose sum is σ = 216201216. Its totient is φ = 27629280.

The previous prime is 87706057. The next prime is 87706127. The reversal of 87706068 is 86060778.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 13255 + ... + 18737.

It is an arithmetic number, because the mean of its divisors is an integer number (4504192).

Almost surely, 287706068 is an apocalyptic number.

It is an amenable number.

87706068 is an abundant number, since it is smaller than the sum of its proper divisors (128495148).

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

87706068 is a wasteful number, since it uses less digits than its factorization.

87706068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564 (or 5562 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 87706068 is about 9365.1517873444. The cubic root of 87706068 is about 444.3002392623.

The spelling of 87706068 in words is "eighty-seven million, seven hundred six thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 31 43 62 86 93 124 129 172 186 258 372 516 1333 2666 3999 5332 5483 7998 10966 15996 16449 21932 32898 65796 169973 235769 339946 471538 509919 679892 707307 943076 1019838 1414614 2039676 2829228 7308839 14617678 21926517 29235356 43853034 87706068