87378732 has 72 divisors (see below), whose sum is σ = 253562400. Its totient is φ = 24853248.

The previous prime is 87378727. The next prime is 87378757. The reversal of 87378732 is 23787378.

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 23 ways as a sum of consecutive naturals, for example, 67144 + ... + 68432.

It is an arithmetic number, because the mean of its divisors is an integer number (3521700).

Almost surely, 2^87378732 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 87378732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126781200).

87378732 is an abundant number, since it is smaller than the sum of its proper divisors (166183668).

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

87378732 is a wasteful number, since it uses less digits than its factorization.

87378732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1570 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 87378732 is about 9347.6591722206. The cubic root of 87378732 is about 443.7468120646.

The spelling of 87378732 in words is "eighty-seven million, three hundred seventy-eight thousand, seven hundred thirty-two".