87232520 has 16 divisors (see below), whose sum is σ = 196273260. Its totient is φ = 34892992.

The previous prime is 87232433. The next prime is 87232567. The reversal of 87232520 is 2523278.

It can be written as a sum of positive squares in 2 ways, for example, as 83868964 + 3363556 = 9158^2 + 1834^2 .

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, 1090367 + ... + 1090446.

Almost surely, 2^87232520 is an apocalyptic number.

It is an amenable number.

87232520 is an abundant number, since it is smaller than the sum of its proper divisors (109040740).

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

87232520 is a wasteful number, since it uses less digits than its factorization.

87232520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180824 (or 2180820 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 87232520 is about 9339.8351163176. The cubic root of 87232520 is about 443.4991647257.

Adding to 87232520 its reverse (2523278), we get a palindrome (89755798).

The spelling of 87232520 in words is "eighty-seven million, two hundred thirty-two thousand, five hundred twenty".