87164388 has 72 divisors (see below), whose sum is σ = 231504000. Its totient is φ = 27651888.

The previous prime is 87164369. The next prime is 87164449. The reversal of 87164388 is 88346178.

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 23 ways as a sum of consecutive naturals, for example, 437913 + ... + 438111.

Almost surely, 2^87164388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87164388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115752000).

87164388 is an abundant number, since it is smaller than the sum of its proper divisors (144339612).

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

87164388 is a wasteful number, since it uses less digits than its factorization.

87164388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 227 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 87164388 is about 9336.1870161217. The cubic root of 87164388 is about 443.3836712712.

The spelling of 87164388 in words is "eighty-seven million, one hundred sixty-four thousand, three hundred eighty-eight".