388716072 has 32 divisors (see below), whose sum is σ = 988264800. Its totient is φ = 127375424.

The previous prime is 388716049. The next prime is 388716073. The reversal of 388716072 is 270617883.

It is a super-2 number, since 2×388716072² = 302200369262218368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388716073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135843 + ... + 138674.

It is an arithmetic number, because the mean of its divisors is an integer number (30883275).

Almost surely, 2^388716072 is an apocalyptic number.

It is an amenable number.

388716072 is an abundant number, since it is smaller than the sum of its proper divisors (599548728).

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

388716072 is a wasteful number, since it uses less digits than its factorization.

388716072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274585 (or 274581 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 388716072 is about 19715.8837488965. The cubic root of 388716072 is about 729.8117185034.

The spelling of 388716072 in words is "three hundred eighty-eight million, seven hundred sixteen thousand, seventy-two".