388998144 has 66 divisors (see below), whose sum is σ = 1123250310. Its totient is φ = 129662976.

The previous prime is 388998121. The next prime is 388998157. The reversal of 388998144 is 441899883.

It can be written as a sum of positive squares in only one way, i.e., 368640000 + 20358144 = 19200^2 + 4512^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11889 + ... + 30320.

Almost surely, 2^388998144 is an apocalyptic number.

It is an amenable number.

388998144 is an abundant number, since it is smaller than the sum of its proper divisors (734252166).

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

388998144 is a wasteful number, since it uses less digits than its factorization.

388998144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42235 (or 42214 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 388998144 is about 19723.0358717922. The cubic root of 388998144 is about 729.9882052263.

The spelling of 388998144 in words is "three hundred eighty-eight million, nine hundred ninety-eight thousand, one hundred forty-four".