388473128 has 16 divisors (see below), whose sum is σ = 760056480. Its totient is φ = 185791408.

The previous prime is 388473097. The next prime is 388473149. The reversal of 388473128 is 821374883.

It is a happy number.

It is a super-2 number, since 2×388473128² = 301822742356208768, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1055450 + ... + 1055817.

It is an arithmetic number, because the mean of its divisors is an integer number (47503530).

Almost surely, 2^388473128 is an apocalyptic number.

It is an amenable number.

388473128 is a deficient number, since it is larger than the sum of its proper divisors (371583352).

388473128 is a wasteful number, since it uses less digits than its factorization.

388473128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111296 (or 2111292 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 388473128 is about 19709.7216621646. The cubic root of 388473128 is about 729.6596449280.

The spelling of 388473128 in words is "three hundred eighty-eight million, four hundred seventy-three thousand, one hundred twenty-eight".