22629820 has 12 divisors (see below), whose sum is σ = 47522664. Its totient is φ = 9051920.

The previous prime is 22629799. The next prime is 22629833. The reversal of 22629820 is 2892622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565726 + ... + 565765.

It is an arithmetic number, because the mean of its divisors is an integer number (3960222).

Almost surely, 2^22629820 is an apocalyptic number.

22629820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22629820 is an abundant number, since it is smaller than the sum of its proper divisors (24892844).

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

22629820 is a wasteful number, since it uses less digits than its factorization.

22629820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131500 (or 1131498 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22629820 is about 4757.0810377794. The cubic root of 22629820 is about 282.8527246287.

The spelling of 22629820 in words is "twenty-two million, six hundred twenty-nine thousand, eight hundred twenty".