388407140728 has 8 divisors (see below), whose sum is σ = 728263388880. Its totient is φ = 194203570360.

The previous prime is 388407140689. The next prime is 388407140783. The reversal of 388407140728 is 827041704883.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24275446288 + ... + 24275446303.

It is an arithmetic number, because the mean of its divisors is an integer number (91032923610).

Almost surely, 2^388407140728 is an apocalyptic number.

It is an amenable number.

388407140728 is a deficient number, since it is larger than the sum of its proper divisors (339856248152).

388407140728 is a wasteful number, since it uses less digits than its factorization.

388407140728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48550892597 (or 48550892593 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 52.

The spelling of 388407140728 in words is "three hundred eighty-eight billion, four hundred seven million, one hundred forty thousand, seven hundred twenty-eight".