87421136 has 20 divisors (see below), whose sum is σ = 184776864. Its totient is φ = 39736800.

The previous prime is 87421127. The next prime is 87421151. The reversal of 87421136 is 63112478.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 248180 + ... + 248531.

Almost surely, 2^87421136 is an apocalyptic number.

It is an amenable number.

87421136 is an abundant number, since it is smaller than the sum of its proper divisors (97355728).

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

87421136 is a wasteful number, since it uses less digits than its factorization.

87421136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496730 (or 496724 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 87421136 is about 9349.9270585390. The cubic root of 87421136 is about 443.8185823775.

The spelling of 87421136 in words is "eighty-seven million, four hundred twenty-one thousand, one hundred thirty-six".