87130572 has 24 divisors (see below), whose sum is σ = 203497392. Its totient is φ = 29016000.

The previous prime is 87130543. The next prime is 87130609. The reversal of 87130572 is 27503178.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12822 + ... + 18402.

It is an arithmetic number, because the mean of its divisors is an integer number (8479058).

Almost surely, 2^87130572 is an apocalyptic number.

It is an amenable number.

87130572 is an abundant number, since it is smaller than the sum of its proper divisors (116366820).

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

87130572 is a wasteful number, since it uses less digits than its factorization.

87130572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889 (or 6887 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 87130572 is about 9334.3758227318. The cubic root of 87130572 is about 443.3263259802.

The spelling of 87130572 in words is "eighty-seven million, one hundred thirty thousand, five hundred seventy-two".