388401180 has 24 divisors (see below), whose sum is σ = 1087523472. Its totient is φ = 103573632.

The previous prime is 388401163. The next prime is 388401187. The reversal of 388401180 is 81104883.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388401187) 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, 3236617 + ... + 3236736.

It is an arithmetic number, because the mean of its divisors is an integer number (45313478).

Almost surely, 2^388401180 is an apocalyptic number.

388401180 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388401180 is an abundant number, since it is smaller than the sum of its proper divisors (699122292).

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

388401180 is a wasteful number, since it uses less digits than its factorization.

388401180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473365 (or 6473363 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 388401180 is about 19707.8963869815. The cubic root of 388401180 is about 729.6145960862.

The spelling of 388401180 in words is "three hundred eighty-eight million, four hundred one thousand, one hundred eighty".