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87126906 = 2389167977
BaseRepresentation
bin1010011000101…
…11001101111010
320001221111122110
411030113031322
5134301030111
612351233150
72105365206
oct514271572
9201844573
1087126906
11451a9809
12252187b6
13150872a9
14b7ddb06
1579b05a6
hex531737a

87126906 has 32 divisors (see below), whose sum is σ = 177448320. Its totient is φ = 28514816.

The previous prime is 87126899. The next prime is 87126911. The reversal of 87126906 is 60962178.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88690 + ... + 89666.

It is an arithmetic number, because the mean of its divisors is an integer number (5545260).

Almost surely, 287126906 is an apocalyptic number.

87126906 is an abundant number, since it is smaller than the sum of its proper divisors (90321414).

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

87126906 is a wasteful number, since it uses less digits than its factorization.

87126906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 87126906 is about 9334.1794497428. The cubic root of 87126906 is about 443.3201082731.

The spelling of 87126906 in words is "eighty-seven million, one hundred twenty-six thousand, nine hundred six".

Divisors: 1 2 3 6 89 167 178 267 334 501 534 977 1002 1954 2931 5862 14863 29726 44589 86953 89178 163159 173906 260859 326318 489477 521718 978954 14521151 29042302 43563453 87126906