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87706296 = 23328913687
BaseRepresentation
bin1010011101001…
…00101010111000
320010000221102100
411032210222320
5134423100141
612411503400
72113330326
oct516445270
9203027370
1087706296
1145565047
1225457b60
131522ac22
14b910d16
157a770b6
hex53a4ab8

87706296 has 48 divisors (see below), whose sum is σ = 240224400. Its totient is φ = 28904832.

The previous prime is 87706271. The next prime is 87706309. The reversal of 87706296 is 69260778.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 436 + ... + 13251.

It is an arithmetic number, because the mean of its divisors is an integer number (5004675).

Almost surely, 287706296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87706296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120112200).

87706296 is an abundant number, since it is smaller than the sum of its proper divisors (152518104).

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

87706296 is a wasteful number, since it uses less digits than its factorization.

87706296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788 (or 13781 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 87706296 is about 9365.1639601237. The cubic root of 87706296 is about 444.3006242618.

The spelling of 87706296 in words is "eighty-seven million, seven hundred six thousand, two hundred ninety-six".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 89 178 267 356 534 712 801 1068 1602 2136 3204 6408 13687 27374 41061 54748 82122 109496 123183 164244 246366 328488 492732 985464 1218143 2436286 3654429 4872572 7308858 9745144 10963287 14617716 21926574 29235432 43853148 87706296