388450656 has 216 divisors, whose sum is σ = 1239153552. Its totient is φ = 115315200.

The previous prime is 388450637. The next prime is 388450661. The reversal of 388450656 is 656054883.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2474130 + ... + 2474286.

It is an arithmetic number, because the mean of its divisors is an integer number (5736822).

Almost surely, 2^388450656 is an apocalyptic number.

388450656 is a gapful number since it is divisible by the number (36) 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 388450656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619576776).

388450656 is an abundant number, since it is smaller than the sum of its proper divisors (850702896).

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

388450656 is a wasteful number, since it uses less digits than its factorization.

388450656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 388450656 is about 19709.1515799133. The cubic root of 388450656 is about 729.6455751193.

The spelling of 388450656 in words is "three hundred eighty-eight million, four hundred fifty thousand, six hundred fifty-six".