23224257 has 24 divisors (see below), whose sum is σ = 39234624. Its totient is φ = 12960864.

The previous prime is 23224241. The next prime is 23224297. The reversal of 23224257 is 75242232.

23224257 is a `hidden beast` number, since 232 + 2 + 425 + 7 = 666.

It is not a de Polignac number, because 23224257 - 2⁴ = 23224241 is a prime.

It is a super-2 number, since 2×23224257² = 1078732226404098, which contains 22 as substring.

23224257 is a modest number, since divided by 4257 gives 2322 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 23224257.

It is not an unprimeable number, because it can be changed into a prime (23224207) 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 23 ways as a sum of consecutive naturals, for example, 1578 + ... + 6995.

It is an arithmetic number, because the mean of its divisors is an integer number (1634776).

Almost surely, 2^23224257 is an apocalyptic number.

It is an amenable number.

23224257 is a deficient number, since it is larger than the sum of its proper divisors (16010367).

23224257 is a wasteful number, since it uses less digits than its factorization.

23224257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8629 (or 8626 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 23224257 is about 4819.1552164254. The cubic root of 23224257 is about 285.3079957497.

Adding to 23224257 its reverse (75242232), we get a palindrome (98466489).

The spelling of 23224257 in words is "twenty-three million, two hundred twenty-four thousand, two hundred fifty-seven".