23720338 has 16 divisors (see below), whose sum is σ = 38294424. Its totient is φ = 10978560.

The previous prime is 23720299. The next prime is 23720371. The reversal of 23720338 is 83302732.

It can be written as a sum of positive squares in 4 ways, for example, as 15000129 + 8720209 = 3873^2 + 2953^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3645 + ... + 7792.

Almost surely, 2^23720338 is an apocalyptic number.

23720338 is a deficient number, since it is larger than the sum of its proper divisors (14574086).

23720338 is a wasteful number, since it uses less digits than its factorization.

23720338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 23720338 is about 4870.3529646218. The cubic root of 23720338 is about 287.3251382806.

The spelling of 23720338 in words is "twenty-three million, seven hundred twenty thousand, three hundred thirty-eight".