Search a number
-
+
87053288 = 2371981817
BaseRepresentation
bin1010011000001…
…01001111101000
320001210202122212
411030011033220
5134241201123
612345504252
72104640450
oct514051750
9201722585
1087053288
1145159473
12251a2088
131505c92a
14b7c0d60
157998878
hex53053e8

87053288 has 32 divisors (see below), whose sum is σ = 196363200. Its totient is φ = 35344512.

The previous prime is 87053257. The next prime is 87053327. The reversal of 87053288 is 88235078.

It is a super-2 number, since 2×870532882 = 15156549903221888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39845 + ... + 41972.

It is an arithmetic number, because the mean of its divisors is an integer number (6136350).

Almost surely, 287053288 is an apocalyptic number.

It is an amenable number.

87053288 is an abundant number, since it is smaller than the sum of its proper divisors (109309912).

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

87053288 is a wasteful number, since it uses less digits than its factorization.

87053288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81849 (or 81845 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 87053288 is about 9330.2351524493. The cubic root of 87053288 is about 443.1952117760.

The spelling of 87053288 in words is "eighty-seven million, fifty-three thousand, two hundred eighty-eight".

Divisors: 1 2 4 7 8 14 19 28 38 56 76 133 152 266 532 1064 81817 163634 327268 572719 654536 1145438 1554523 2290876 3109046 4581752 6218092 10881661 12436184 21763322 43526644 87053288