87989536 has 24 divisors (see below), whose sum is σ = 180762624. Its totient is φ = 42081600.

The previous prime is 87989521. The next prime is 87989549. The reversal of 87989536 is 63598978.

It is a happy number.

It is an unprimeable number.

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, 59040 + ... + 60511.

It is an arithmetic number, because the mean of its divisors is an integer number (7531776).

Almost surely, 2^87989536 is an apocalyptic number.

It is an amenable number.

87989536 is an abundant number, since it is smaller than the sum of its proper divisors (92773088).

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

87989536 is a wasteful number, since it uses less digits than its factorization.

87989536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119584 (or 119576 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The square root of 87989536 is about 9380.2737699920. The cubic root of 87989536 is about 444.7783873183.

The spelling of 87989536 in words is "eighty-seven million, nine hundred eighty-nine thousand, five hundred thirty-six".