388557480 has 64 divisors (see below), whose sum is σ = 1185451200. Its totient is φ = 101857280.

The previous prime is 388557479. The next prime is 388557487. The reversal of 388557480 is 84755883.

It is not an unprimeable number, because it can be changed into a prime (388557487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20361 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (18522675).

Almost surely, 2^388557480 is an apocalyptic number.

388557480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388557480 is an abundant number, since it is smaller than the sum of its proper divisors (796893720).

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

388557480 is a wasteful number, since it uses less digits than its factorization.

388557480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54954 (or 54950 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The square root of 388557480 is about 19711.8614037335. The cubic root of 388557480 is about 729.7124532105.

The spelling of 388557480 in words is "three hundred eighty-eight million, five hundred fifty-seven thousand, four hundred eighty".