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87230964 = 2237269247
BaseRepresentation
bin1010011001100…
…00100111110100
320002010210101110
411030300213310
5134312342324
612353355020
72106310452
oct514604764
9202123343
1087230964
114526aa07
1225268a70
13150c2772
14b8299d2
1579d1329
hex53309f4

87230964 has 12 divisors (see below), whose sum is σ = 203538944. Its totient is φ = 29076984.

The previous prime is 87230963. The next prime is 87230977. The reversal of 87230964 is 46903278.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87230963) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3634612 + ... + 3634635.

Almost surely, 287230964 is an apocalyptic number.

It is an amenable number.

87230964 is an abundant number, since it is smaller than the sum of its proper divisors (116307980).

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

87230964 is a wasteful number, since it uses less digits than its factorization.

87230964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7269254 (or 7269252 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 87230964 is about 9339.7518168311. The cubic root of 87230964 is about 443.4965277550.

The spelling of 87230964 in words is "eighty-seven million, two hundred thirty thousand, nine hundred sixty-four".

Divisors: 1 2 3 4 6 12 7269247 14538494 21807741 29076988 43615482 87230964