23220424 has 16 divisors (see below), whose sum is σ = 44135820. Its totient is φ = 11450880.

The previous prime is 23220403. The next prime is 23220437. The reversal of 23220424 is 42402232.

It can be written as a sum of positive squares in 2 ways, for example, as 22184100 + 1036324 = 4710^2 + 1018^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19297 + ... + 20464.

Almost surely, 2^23220424 is an apocalyptic number.

It is an amenable number.

23220424 is a deficient number, since it is larger than the sum of its proper divisors (20915396).

23220424 is a wasteful number, since it uses less digits than its factorization.

23220424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39840 (or 39836 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 23220424 is about 4818.7575162068. The cubic root of 23220424 is about 285.2922988612.

Adding to 23220424 its reverse (42402232), we get a palindrome (65622656).

The spelling of 23220424 in words is "twenty-three million, two hundred twenty thousand, four hundred twenty-four".