22724860 has 24 divisors (see below), whose sum is σ = 49262976. Its totient is φ = 8796480.

The previous prime is 22724843. The next prime is 22724887. The reversal of 22724860 is 6842722.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17707 + ... + 18946.

It is an arithmetic number, because the mean of its divisors is an integer number (2052624).

Almost surely, 2^22724860 is an apocalyptic number.

22724860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22724860 is an abundant number, since it is smaller than the sum of its proper divisors (26538116).

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

22724860 is a wasteful number, since it uses less digits than its factorization.

22724860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36693 (or 36691 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 22724860 is about 4767.0598905405. The cubic root of 22724860 is about 283.2481435543.

The spelling of 22724860 in words is "twenty-two million, seven hundred twenty-four thousand, eight hundred sixty".