388601972 has 48 divisors (see below), whose sum is σ = 788296320. Its totient is φ = 165916800.

The previous prime is 388601971. The next prime is 388602013. The reversal of 388601972 is 279106883.

It is a super-2 number, since 2×388601972² = 302022985284577568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388601971) 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, 43097 + ... + 51327.

It is an arithmetic number, because the mean of its divisors is an integer number (16422840).

Almost surely, 2^388601972 is an apocalyptic number.

It is an amenable number.

388601972 is an abundant number, since it is smaller than the sum of its proper divisors (399694348).

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

388601972 is a wasteful number, since it uses less digits than its factorization.

388601972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312 (or 8310 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 388601972 is about 19712.9899305001. The cubic root of 388601972 is about 729.7403041970.

The spelling of 388601972 in words is "three hundred eighty-eight million, six hundred one thousand, nine hundred seventy-two".