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87163076 = 227112131979
BaseRepresentation
bin1010011001000…
…00000011000100
320002000100021002
411030200003010
5134303204301
612352112432
72105605520
oct514400304
9202010232
1087163076
1145223a00
1225235718
131509a8b0
14b80cd80
1579bb16b
hex53200c4

87163076 has 72 divisors (see below), whose sum is σ = 206458560. Its totient is φ = 31331520.

The previous prime is 87163057. The next prime is 87163081. The reversal of 87163076 is 67036178.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43055 + ... + 45033.

It is an arithmetic number, because the mean of its divisors is an integer number (2867480).

Almost surely, 287163076 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 87163076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103229280).

87163076 is an abundant number, since it is smaller than the sum of its proper divisors (119295484).

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

87163076 is a wasteful number, since it uses less digits than its factorization.

87163076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87163076 is about 9336.1167516264. The cubic root of 87163076 is about 443.3814466536.

The spelling of 87163076 in words is "eighty-seven million, one hundred sixty-three thousand, seventy-six".

Divisors: 1 2 4 7 11 13 14 22 26 28 44 52 77 91 121 143 154 182 242 286 308 364 484 572 847 1001 1573 1694 1979 2002 3146 3388 3958 4004 6292 7916 11011 13853 21769 22022 25727 27706 43538 44044 51454 55412 87076 102908 152383 180089 239459 282997 304766 360178 478918 565994 609532 720356 957836 1131988 1676213 1980979 3112967 3352426 3961958 6225934 6704852 7923916 12451868 21790769 43581538 87163076