22628220 has 24 divisors (see below), whose sum is σ = 63359184. Its totient is φ = 6034176.

The previous prime is 22628131. The next prime is 22628231. The reversal of 22628220 is 2282622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188509 + ... + 188628.

It is an arithmetic number, because the mean of its divisors is an integer number (2639966).

Almost surely, 2^22628220 is an apocalyptic number.

22628220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22628220 is an abundant number, since it is smaller than the sum of its proper divisors (40730964).

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

22628220 is a wasteful number, since it uses less digits than its factorization.

22628220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377149 (or 377147 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 22628220 is about 4756.9128644532. The cubic root of 22628220 is about 282.8460582768.

The spelling of 22628220 in words is "twenty-two million, six hundred twenty-eight thousand, two hundred twenty".