87213384 has 48 divisors (see below), whose sum is σ = 236779920. Its totient is φ = 29000160.

The previous prime is 87213377. The next prime is 87213391. The reversal of 87213384 is 48331278.

It is an interprime number because it is at equal distance from previous prime (87213377) and next prime (87213391).

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

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 11 ways as a sum of consecutive naturals, for example, 34119 + ... + 36585.

It is an arithmetic number, because the mean of its divisors is an integer number (4932915).

Almost surely, 2^87213384 is an apocalyptic number.

It is an amenable number.

87213384 is an abundant number, since it is smaller than the sum of its proper divisors (149566536).

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

87213384 is a wasteful number, since it uses less digits than its factorization.

87213384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970 (or 2963 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 87213384 is about 9338.8106309101. The cubic root of 87213384 is about 443.4667325522.

The spelling of 87213384 in words is "eighty-seven million, two hundred thirteen thousand, three hundred eighty-four".