23221824 has 28 divisors (see below), whose sum is σ = 61441584. Its totient is φ = 7740544.

The previous prime is 23221817. The next prime is 23221841. The reversal of 23221824 is 42812232.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23221794 and 23221803.

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, 60282 + ... + 60665.

Almost surely, 2^23221824 is an apocalyptic number.

23221824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23221824 is an abundant number, since it is smaller than the sum of its proper divisors (38219760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23221824 is a wasteful number, since it uses less digits than its factorization.

23221824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120962 (or 120952 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 23221824 is about 4818.9027796792. The cubic root of 23221824 is about 285.2980323366.

The spelling of 23221824 in words is "twenty-three million, two hundred twenty-one thousand, eight hundred twenty-four".