87709232 has 40 divisors (see below), whose sum is σ = 183634080. Its totient is φ = 40343040.

The previous prime is 87709229. The next prime is 87709241. The reversal of 87709232 is 23290778.

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, 84557 + ... + 85587.

It is an arithmetic number, because the mean of its divisors is an integer number (4590852).

Almost surely, 2^87709232 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 87709232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91817040).

87709232 is an abundant number, since it is smaller than the sum of its proper divisors (95924848).

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

87709232 is a wasteful number, since it uses less digits than its factorization.

87709232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1455 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87709232 is about 9365.3207099383. The cubic root of 87709232 is about 444.3055819145.

The spelling of 87709232 in words is "eighty-seven million, seven hundred nine thousand, two hundred thirty-two".