87780832 has 24 divisors (see below), whose sum is σ = 174088656. Its totient is φ = 43567872.

The previous prime is 87780827. The next prime is 87780859. The reversal of 87780832 is 23808778.

It is a super-2 number, since 2×87780832² = 15410948933224448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5628 + ... + 14395.

It is an arithmetic number, because the mean of its divisors is an integer number (7253694).

Almost surely, 2^87780832 is an apocalyptic number.

It is an amenable number.

87780832 is a deficient number, since it is larger than the sum of its proper divisors (86307824).

87780832 is a wasteful number, since it uses less digits than its factorization.

87780832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20170 (or 20162 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 87780832 is about 9369.1425434775. The cubic root of 87780832 is about 444.4264495677.

The spelling of 87780832 in words is "eighty-seven million, seven hundred eighty thousand, eight hundred thirty-two".