87363920 has 40 divisors (see below), whose sum is σ = 232139904. Its totient is φ = 29953152.

The previous prime is 87363883. The next prime is 87363949. The reversal of 87363920 is 2936378.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77444 + ... + 78563.

Almost surely, 2^87363920 is an apocalyptic number.

87363920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87363920 is an abundant number, since it is smaller than the sum of its proper divisors (144775984).

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

87363920 is a wasteful number, since it uses less digits than its factorization.

87363920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156027 (or 156021 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 87363920 is about 9346.8668547273. The cubic root of 87363920 is about 443.7217367438.

The spelling of 87363920 in words is "eighty-seven million, three hundred sixty-three thousand, nine hundred twenty".