87152780 has 96 divisors (see below), whose sum is σ = 222179328. Its totient is φ = 28281600.

The previous prime is 87152771. The next prime is 87152783. The reversal of 87152780 is 8725178.

It is not an unprimeable number, because it can be changed into a prime (87152783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88169 + ... + 89151.

It is an arithmetic number, because the mean of its divisors is an integer number (2314368).

Almost surely, 2^87152780 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 87152780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111089664).

87152780 is an abundant number, since it is smaller than the sum of its proper divisors (135026548).

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

87152780 is a wasteful number, since it uses less digits than its factorization.

87152780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 87152780 is about 9335.5653283559. The cubic root of 87152780 is about 443.3639880562.

The spelling of 87152780 in words is "eighty-seven million, one hundred fifty-two thousand, seven hundred eighty".