88644520 has 16 divisors (see below), whose sum is σ = 199450260. Its totient is φ = 35457792.

The previous prime is 88644499. The next prime is 88644533. The reversal of 88644520 is 2544688.

It can be written as a sum of positive squares in 2 ways, for example, as 83795716 + 4848804 = 9154^2 + 2202^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 88644520.

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, 1108017 + ... + 1108096.

Almost surely, 2^88644520 is an apocalyptic number.

It is an amenable number.

88644520 is an abundant number, since it is smaller than the sum of its proper divisors (110805740).

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

88644520 is a wasteful number, since it uses less digits than its factorization.

88644520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216124 (or 2216120 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 88644520 is about 9415.1218791899. The cubic root of 88644520 is about 445.8792865745.

The spelling of 88644520 in words is "eighty-eight million, six hundred forty-four thousand, five hundred twenty".