388670172 has 24 divisors (see below), whose sum is σ = 989342592. Its totient is φ = 117778800.

The previous prime is 388670153. The next prime is 388670179. The reversal of 388670172 is 271076883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388670179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472104 + ... + 1472367.

It is an arithmetic number, because the mean of its divisors is an integer number (41222608).

Almost surely, 2^388670172 is an apocalyptic number.

It is an amenable number.

388670172 is an abundant number, since it is smaller than the sum of its proper divisors (600672420).

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

388670172 is a wasteful number, since it uses less digits than its factorization.

388670172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944489 (or 2944487 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 388670172 is about 19714.7196784535. The cubic root of 388670172 is about 729.7829917292.

The spelling of 388670172 in words is "three hundred eighty-eight million, six hundred seventy thousand, one hundred seventy-two".