388816488 has 48 divisors (see below), whose sum is σ = 1065748320. Its totient is φ = 128042016.

The previous prime is 388816487. The next prime is 388816507. The reversal of 388816488 is 884618883.

388816488 is a `hidden beast` number, since 3 + 88 + 81 + 6 + 488 = 666.

It is a super-2 number, since 2×388816488² = 302356522681308288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (388816481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26556 + ... + 38507.

It is an arithmetic number, because the mean of its divisors is an integer number (22203090).

Almost surely, 2^388816488 is an apocalyptic number.

It is an amenable number.

388816488 is an abundant number, since it is smaller than the sum of its proper divisors (676931832).

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

388816488 is a wasteful number, since it uses less digits than its factorization.

388816488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65158 (or 65151 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The square root of 388816488 is about 19718.4301606391. The cubic root of 388816488 is about 729.8745565397.

It can be divided in two parts, 38881 and 6488, that added together give a square (45369 = 213²).

The spelling of 388816488 in words is "three hundred eighty-eight million, eight hundred sixteen thousand, four hundred eighty-eight".