388977960 has 128 divisors (see below), whose sum is σ = 1338624000. Its totient is φ = 88577280.

The previous prime is 388977959. The next prime is 388977983. The reversal of 388977960 is 69779883.

It is a self number, because there is not a number n which added to its sum of digits gives 388977960.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277341 + ... + 278739.

It is an arithmetic number, because the mean of its divisors is an integer number (10458000).

Almost surely, 2^388977960 is an apocalyptic number.

388977960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388977960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669312000).

388977960 is an abundant number, since it is smaller than the sum of its proper divisors (949646040).

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

388977960 is a wasteful number, since it uses less digits than its factorization.

388977960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 388977960 is about 19722.5241792221. The cubic root of 388977960 is about 729.9755793419.

The spelling of 388977960 in words is "three hundred eighty-eight million, nine hundred seventy-seven thousand, nine hundred sixty".