22724845 has 32 divisors (see below), whose sum is σ = 32941440. Its totient is φ = 14826240.

The previous prime is 22724843. The next prime is 22724887. The reversal of 22724845 is 54842722.

It is not a de Polignac number, because 22724845 - 2¹ = 22724843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22724845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22724843) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 26026 + ... + 26884.

It is an arithmetic number, because the mean of its divisors is an integer number (1029420).

Almost surely, 2^22724845 is an apocalyptic number.

It is an amenable number.

22724845 is a deficient number, since it is larger than the sum of its proper divisors (10216595).

22724845 is a wasteful number, since it uses less digits than its factorization.

22724845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its digits is 35840, while the sum is 34.

The square root of 22724845 is about 4767.0583172435. The cubic root of 22724845 is about 283.2480812331.

It can be divided in two parts, 2272 and 4845, that added together give a palindrome (7117).

The spelling of 22724845 in words is "twenty-two million, seven hundred twenty-four thousand, eight hundred forty-five".