621928104 has 64 divisors (see below), whose sum is σ = 1794579840. Its totient is φ = 175929600.

The previous prime is 621928093. The next prime is 621928141. The reversal of 621928104 is 401829126.

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, 1359 + ... + 35294.

It is an arithmetic number, because the mean of its divisors is an integer number (28040310).

Almost surely, 2^621928104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621928104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897289920).

621928104 is an abundant number, since it is smaller than the sum of its proper divisors (1172651736).

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

621928104 is a wasteful number, since it uses less digits than its factorization.

621928104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36770 (or 36766 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 621928104 is about 24938.4864015441. The cubic root of 621928104 is about 853.5849072436.

The spelling of 621928104 in words is "six hundred twenty-one million, nine hundred twenty-eight thousand, one hundred four".