388946724 has 48 divisors (see below), whose sum is σ = 943864320. Its totient is φ = 124508160.

The previous prime is 388946713. The next prime is 388946741. The reversal of 388946724 is 427649883.

It is a super-2 number, since 2×388946724² = 302559108220664352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64269 + ... + 70059.

It is an arithmetic number, because the mean of its divisors is an integer number (19663840).

Almost surely, 2^388946724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388946724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471932160).

388946724 is an abundant number, since it is smaller than the sum of its proper divisors (554917596).

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

388946724 is a wasteful number, since it uses less digits than its factorization.

388946724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020 (or 6018 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 388946724 is about 19721.7322768564. The cubic root of 388946724 is about 729.9560391367.

The spelling of 388946724 in words is "three hundred eighty-eight million, nine hundred forty-six thousand, seven hundred twenty-four".