22464220 has 12 divisors (see below), whose sum is σ = 47174904. Its totient is φ = 8985680.

The previous prime is 22464193. The next prime is 22464227. The reversal of 22464220 is 2246422.

It is a junction number, because it is equal to n+sod(n) for n = 22464191 and 22464200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22464227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561586 + ... + 561625.

It is an arithmetic number, because the mean of its divisors is an integer number (3931242).

Almost surely, 2^22464220 is an apocalyptic number.

22464220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22464220 is an abundant number, since it is smaller than the sum of its proper divisors (24710684).

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

22464220 is a wasteful number, since it uses less digits than its factorization.

22464220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123220 (or 1123218 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 22464220 is about 4739.6434465052. The cubic root of 22464220 is about 282.1610836304.

The spelling of 22464220 in words is "twenty-two million, four hundred sixty-four thousand, two hundred twenty".