22724153 has 4 divisors (see below), whose sum is σ = 22764660. Its totient is φ = 22683648.

The previous prime is 22724129. The next prime is 22724173. The reversal of 22724153 is 35142722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11648569 + 11075584 = 3413^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 22724153 - 2¹⁶ = 22658617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22724123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19400 + ... + 20537.

It is an arithmetic number, because the mean of its divisors is an integer number (5691165).

Almost surely, 2^22724153 is an apocalyptic number.

It is an amenable number.

22724153 is a deficient number, since it is larger than the sum of its proper divisors (40507).

22724153 is an equidigital number, since it uses as much as digits as its factorization.

22724153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40506.

The product of its digits is 3360, while the sum is 26.

The square root of 22724153 is about 4766.9857352419. The cubic root of 22724153 is about 283.2452061176.

Adding to 22724153 its reverse (35142722), we get a palindrome (57866875).

The spelling of 22724153 in words is "twenty-two million, seven hundred twenty-four thousand, one hundred fifty-three".