88139788 has 18 divisors (see below), whose sum is σ = 169542548. Its totient is φ = 40063320.

The previous prime is 88139783. The next prime is 88139797. The reversal of 88139788 is 88793188.

It is not an unprimeable number, because it can be changed into a prime (88139783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90570 + ... + 91537.

Almost surely, 2^88139788 is an apocalyptic number.

It is an amenable number.

88139788 is a deficient number, since it is larger than the sum of its proper divisors (81402760).

88139788 is a wasteful number, since it uses less digits than its factorization.

88139788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182133 (or 182120 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The square root of 88139788 is about 9388.2792885598. The cubic root of 88139788 is about 445.0314130078.

It can be divided in two parts, 88 and 139788, that added together give a square (139876 = 374²).

The spelling of 88139788 in words is "eighty-eight million, one hundred thirty-nine thousand, seven hundred eighty-eight".