87245538 has 16 divisors (see below), whose sum is σ = 178549536. Its totient is φ = 28405440.

The previous prime is 87245527. The next prime is 87245551. The reversal of 87245538 is 83554278.

It is a super-2 number, since 2×87245538² = 15223567801818888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87245538.

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, 168823 + ... + 169338.

It is an arithmetic number, because the mean of its divisors is an integer number (11159346).

Almost surely, 2^87245538 is an apocalyptic number.

87245538 is an abundant number, since it is smaller than the sum of its proper divisors (91303998).

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

87245538 is a wasteful number, since it uses less digits than its factorization.

87245538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338209.

The product of its digits is 268800, while the sum is 42.

The square root of 87245538 is about 9340.5319976969. The cubic root of 87245538 is about 443.5212252484.

The spelling of 87245538 in words is "eighty-seven million, two hundred forty-five thousand, five hundred thirty-eight".