22724361 has 32 divisors (see below), whose sum is σ = 38668800. Its totient is φ = 13044240.

The previous prime is 22724347. The next prime is 22724363. The reversal of 22724361 is 16342722.

22724361 is a `hidden beast` number, since 227 + 2 + 436 + 1 = 666.

It is not a de Polignac number, because 22724361 - 2⁵ = 22724329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22724363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3630 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (1208400).

Almost surely, 2^22724361 is an apocalyptic number.

It is an amenable number.

22724361 is a deficient number, since it is larger than the sum of its proper divisors (15944439).

22724361 is a wasteful number, since it uses less digits than its factorization.

22724361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 4060 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 22724361 is about 4767.0075519135. The cubic root of 22724361 is about 283.2460703203.

The spelling of 22724361 in words is "twenty-two million, seven hundred twenty-four thousand, three hundred sixty-one".