87160572 has 36 divisors (see below), whose sum is σ = 220605840. Its totient is φ = 29016192.

The previous prime is 87160571. The next prime is 87160583. The reversal of 87160572 is 27506178.

87160572 is a `hidden beast` number, since 87 + 1 + 6 + 0 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×87160572² = 15193930622734368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87160571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55129 + ... + 56687.

It is an arithmetic number, because the mean of its divisors is an integer number (6127940).

Almost surely, 2^87160572 is an apocalyptic number.

It is an amenable number.

87160572 is an abundant number, since it is smaller than the sum of its proper divisors (133445268).

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

87160572 is a wasteful number, since it uses less digits than its factorization.

87160572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 87160572 is about 9335.9826477988. The cubic root of 87160572 is about 443.3772008275.

The spelling of 87160572 in words is "eighty-seven million, one hundred sixty thousand, five hundred seventy-two".