22724487 has 24 divisors (see below), whose sum is σ = 34398000. Its totient is φ = 14437248.

The previous prime is 22724479. The next prime is 22724497. The reversal of 22724487 is 78442722.

It is not a de Polignac number, because 22724487 - 2³ = 22724479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22724417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21139 + ... + 22187.

It is an arithmetic number, because the mean of its divisors is an integer number (1433250).

Almost surely, 2^22724487 is an apocalyptic number.

22724487 is a deficient number, since it is larger than the sum of its proper divisors (11673513).

22724487 is a wasteful number, since it uses less digits than its factorization.

22724487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1164 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 22724487 is about 4767.0207677332. The cubic root of 22724487 is about 283.2465938251.

The spelling of 22724487 in words is "twenty-two million, seven hundred twenty-four thousand, four hundred eighty-seven".