621925238 has 12 divisors (see below), whose sum is σ = 1025406060. Its totient is φ = 282693180.

The previous prime is 621925237. The next prime is 621925247. The reversal of 621925238 is 832529126.

621925238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×621925238² = 773582003322713288, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621925237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1284728 + ... + 1285211.

It is an arithmetic number, because the mean of its divisors is an integer number (85450505).

Almost surely, 2^621925238 is an apocalyptic number.

621925238 is a deficient number, since it is larger than the sum of its proper divisors (403480822).

621925238 is a wasteful number, since it uses less digits than its factorization.

621925238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569963 (or 2569952 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 621925238 is about 24938.4289400916. The cubic root of 621925238 is about 853.5835960641.

The spelling of 621925238 in words is "six hundred twenty-one million, nine hundred twenty-five thousand, two hundred thirty-eight".