22413720 has 64 divisors (see below), whose sum is σ = 76849920. Its totient is φ = 5122944.

The previous prime is 22413709. The next prime is 22413731. The reversal of 22413720 is 2731422.

It is an interprime number because it is at equal distance from previous prime (22413709) and next prime (22413731).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12502 + ... + 14181.

It is an arithmetic number, because the mean of its divisors is an integer number (1200780).

Almost surely, 2^22413720 is an apocalyptic number.

22413720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22413720 is an abundant number, since it is smaller than the sum of its proper divisors (54436200).

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

22413720 is a wasteful number, since it uses less digits than its factorization.

22413720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26704 (or 26700 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22413720 is about 4734.3130441491. The cubic root of 22413720 is about 281.9494904758.

The spelling of 22413720 in words is "twenty-two million, four hundred thirteen thousand, seven hundred twenty".