388615652 has 12 divisors (see below), whose sum is σ = 687719340. Its totient is φ = 192124416.

The previous prime is 388615649. The next prime is 388615657. The reversal of 388615652 is 256516883.

It can be written as a sum of positive squares in 2 ways, for example, as 265494436 + 123121216 = 16294^2 + 11096^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (388615657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545453 + ... + 546164.

It is an arithmetic number, because the mean of its divisors is an integer number (57309945).

Almost surely, 2^388615652 is an apocalyptic number.

It is an amenable number.

388615652 is a deficient number, since it is larger than the sum of its proper divisors (299103688).

388615652 is a wasteful number, since it uses less digits than its factorization.

388615652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091710 (or 1091708 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 388615652 is about 19713.3369067746. The cubic root of 388615652 is about 729.7488671405.

The spelling of 388615652 in words is "three hundred eighty-eight million, six hundred fifteen thousand, six hundred fifty-two".