22422820 has 24 divisors (see below), whose sum is σ = 53815104. Its totient is φ = 7687776.

The previous prime is 22422809. The next prime is 22422839. The reversal of 22422820 is 2822422.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22422791 and 22422800.

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, 79942 + ... + 80221.

It is an arithmetic number, because the mean of its divisors is an integer number (2242296).

Almost surely, 2^22422820 is an apocalyptic number.

22422820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22422820 is an abundant number, since it is smaller than the sum of its proper divisors (31392284).

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

22422820 is a wasteful number, since it uses less digits than its factorization.

22422820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160179 (or 160177 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 22422820 is about 4735.2740153026. The cubic root of 22422820 is about 281.9876426019.

The spelling of 22422820 in words is "twenty-two million, four hundred twenty-two thousand, eight hundred twenty".