388841472 has 150 divisors (see below), whose sum is σ = 1165653258. Its totient is φ = 129171456.

The previous prime is 388841461. The next prime is 388841489. The reversal of 388841472 is 274148883.

It can be written as a sum of positive squares in only one way, i.e., 383533056 + 5308416 = 19584^2 + 2304^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1326958 + ... + 1327250.

Almost surely, 2^388841472 is an apocalyptic number.

388841472 is a gapful number since it is divisible by the number (32) 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 388841472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582826629).

388841472 is an abundant number, since it is smaller than the sum of its proper divisors (776811786).

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

388841472 is an frugal number, since it uses more digits than its factorization.

388841472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 298 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 388841472 is about 19719.0636694545. The cubic root of 388841472 is about 729.8901892747.

The spelling of 388841472 in words is "three hundred eighty-eight million, eight hundred forty-one thousand, four hundred seventy-two".