23720499 has 16 divisors (see below), whose sum is σ = 38336640. Its totient is φ = 14375880.

The previous prime is 23720497. The next prime is 23720503. The reversal of 23720499 is 99402732.

It is not a de Polignac number, because 23720499 - 2¹ = 23720497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23720497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39637 + ... + 40230.

It is an arithmetic number, because the mean of its divisors is an integer number (2396040).

Almost surely, 2^23720499 is an apocalyptic number.

23720499 is a deficient number, since it is larger than the sum of its proper divisors (14616141).

23720499 is a wasteful number, since it uses less digits than its factorization.

23720499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79887 (or 79881 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 23720499 is about 4870.3694931699. The cubic root of 23720499 is about 287.3257883450.

It can be divided in two parts, 237 and 20499, that added together give a 4-th power (20736 = 12⁴).

The spelling of 23720499 in words is "twenty-three million, seven hundred twenty thousand, four hundred ninety-nine".