22724705 has 16 divisors (see below), whose sum is σ = 28305408. Its totient is φ = 17496000.

The previous prime is 22724659. The next prime is 22724707. The reversal of 22724705 is 50742722.

It is not a de Polignac number, because 22724705 - 2²⁰ = 21676129 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22724707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41735 + ... + 42275.

It is an arithmetic number, because the mean of its divisors is an integer number (1769088).

Almost surely, 2^22724705 is an apocalyptic number.

It is an amenable number.

22724705 is a deficient number, since it is larger than the sum of its proper divisors (5580703).

22724705 is a wasteful number, since it uses less digits than its factorization.

22724705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 22724705 is about 4767.0436331127. The cubic root of 22724705 is about 283.2474995670.

The spelling of 22724705 in words is "twenty-two million, seven hundred twenty-four thousand, seven hundred five".