621427926 has 32 divisors (see below), whose sum is σ = 1440419328. Its totient is φ = 175049280.

The previous prime is 621427901. The next prime is 621427949. The reversal of 621427926 is 629724126.

It is a super-2 number, since 2×621427926² = 772345334425322952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101215 + ... + 107178.

It is an arithmetic number, because the mean of its divisors is an integer number (45013104).

Almost surely, 2^621427926 is an apocalyptic number.

621427926 is an abundant number, since it is smaller than the sum of its proper divisors (818991402).

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

621427926 is a wasteful number, since it uses less digits than its factorization.

621427926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208476.

The product of its digits is 72576, while the sum is 39.

The square root of 621427926 is about 24928.4561495493. The cubic root of 621427926 is about 853.3560174973.

The spelling of 621427926 in words is "six hundred twenty-one million, four hundred twenty-seven thousand, nine hundred twenty-six".