87997952 has 80 divisors (see below), whose sum is σ = 205974912. Its totient is φ = 36771840.

The previous prime is 87997939. The next prime is 87997991. The reversal of 87997952 is 25979978.

It is a Harshad number since it is a multiple of its sum of digits (56).

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 7 ways as a sum of consecutive naturals, for example, 153827 + ... + 154397.

Almost surely, 2^87997952 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 87997952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102987456).

87997952 is an abundant number, since it is smaller than the sum of its proper divisors (117976960).

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

87997952 is an equidigital number, since it uses as much as digits as its factorization.

87997952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 623 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 56.

The square root of 87997952 is about 9380.7223602450. The cubic root of 87997952 is about 444.7925675483.

The spelling of 87997952 in words is "eighty-seven million, nine hundred ninety-seven thousand, nine hundred fifty-two".