388106872 has 32 divisors (see below), whose sum is σ = 771480720. Its totient is φ = 182407680.

The previous prime is 388106867. The next prime is 388106879. The reversal of 388106872 is 278601883.

It is a happy number.

It is a super-3 number, since 3×388106872³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388106879) 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, 158038 + ... + 160474.

Almost surely, 2^388106872 is an apocalyptic number.

It is an amenable number.

388106872 is a deficient number, since it is larger than the sum of its proper divisors (383373848).

388106872 is a wasteful number, since it uses less digits than its factorization.

388106872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 388106872 is about 19700.4282186962. The cubic root of 388106872 is about 729.4302629075.

The spelling of 388106872 in words is "three hundred eighty-eight million, one hundred six thousand, eight hundred seventy-two".