388862970 has 64 divisors (see below), whose sum is σ = 971827200. Its totient is φ = 99491328.

The previous prime is 388862959. The next prime is 388862989. The reversal of 388862970 is 79268883.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78631 + ... + 83429.

It is an arithmetic number, because the mean of its divisors is an integer number (15184800).

Almost surely, 2^388862970 is an apocalyptic number.

388862970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 388862970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485913600).

388862970 is an abundant number, since it is smaller than the sum of its proper divisors (582964230).

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

388862970 is a wasteful number, since it uses less digits than its factorization.

388862970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 388862970 is about 19719.6087689386. The cubic root of 388862970 is about 729.9036402491.

The spelling of 388862970 in words is "three hundred eighty-eight million, eight hundred sixty-two thousand, nine hundred seventy".