390688100 has 36 divisors (see below), whose sum is σ = 924867888. Its totient is φ = 142068000.

The previous prime is 390688073. The next prime is 390688117. The reversal of 390688100 is 1886093.

It is a super-2 number, since 2×390688100² = 305274382963220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176486 + ... + 178685.

Almost surely, 2^390688100 is an apocalyptic number.

It is an amenable number.

390688100 is an abundant number, since it is smaller than the sum of its proper divisors (534179788).

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

390688100 is a wasteful number, since it uses less digits than its factorization.

390688100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355196 (or 355189 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 390688100 is about 19765.8316293547. The cubic root of 390688100 is about 731.0437936114.

The spelling of 390688100 in words is "three hundred ninety million, six hundred eighty-eight thousand, one hundred".