87249532 has 6 divisors (see below), whose sum is σ = 152686688. Its totient is φ = 43624764.

The previous prime is 87249521. The next prime is 87249541. The reversal of 87249532 is 23594278.

It is a super-2 number, since 2×87249532² = 15224961668438048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10906188 + ... + 10906195.

Almost surely, 2^87249532 is an apocalyptic number.

It is an amenable number.

87249532 is a deficient number, since it is larger than the sum of its proper divisors (65437156).

87249532 is a wasteful number, since it uses less digits than its factorization.

87249532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21812387 (or 21812385 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 87249532 is about 9340.7457946355. The cubic root of 87249532 is about 443.5279931083.

The spelling of 87249532 in words is "eighty-seven million, two hundred forty-nine thousand, five hundred thirty-two".