23720824 has 16 divisors (see below), whose sum is σ = 44588520. Its totient is φ = 11830560.

The previous prime is 23720813. The next prime is 23720849. The reversal of 23720824 is 42802732.

It is a junction number, because it is equal to n+sod(n) for n = 23720792 and 23720801.

It is a congruent number.

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, 154 + ... + 6889.

Almost surely, 2^23720824 is an apocalyptic number.

It is an amenable number.

23720824 is a deficient number, since it is larger than the sum of its proper divisors (20867696).

23720824 is a wasteful number, since it uses less digits than its factorization.

23720824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470 (or 7466 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 23720824 is about 4870.4028580806. The cubic root of 23720824 is about 287.3271005778.

The spelling of 23720824 in words is "twenty-three million, seven hundred twenty thousand, eight hundred twenty-four".