22628921400 has 120 divisors (see below), whose sum is σ = 78593652720. Its totient is φ = 6034374720.

The previous prime is 22628921377. The next prime is 22628921401. The reversal of 22628921400 is 412982622.

22628921400 is a `hidden beast` number, since 2 + 2 + 628 + 9 + 21 + 4 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22628921401) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 682224 + ... + 714623.

It is an arithmetic number, because the mean of its divisors is an integer number (654947106).

Almost surely, 2^22628921400 is an apocalyptic number.

22628921400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22628921400 is an abundant number, since it is smaller than the sum of its proper divisors (55964731320).

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

22628921400 is a wasteful number, since it uses less digits than its factorization.

22628921400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396875 (or 1396857 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 22628921400 in words is "twenty-two billion, six hundred twenty-eight million, nine hundred twenty-one thousand, four hundred".