23057739 has 12 divisors (see below), whose sum is σ = 33569536. Its totient is φ = 15250032.

The previous prime is 23057719. The next prime is 23057743. The reversal of 23057739 is 93775032.

It is a happy number.

It is not a de Polignac number, because 23057739 - 2⁹ = 23057227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23057719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8944 + ... + 11229.

Almost surely, 2^23057739 is an apocalyptic number.

23057739 is a deficient number, since it is larger than the sum of its proper divisors (10511797).

23057739 is a wasteful number, since it uses less digits than its factorization.

23057739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20306 (or 20303 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 23057739 is about 4801.8474569690. The cubic root of 23057739 is about 284.6244730911.

The spelling of 23057739 in words is "twenty-three million, fifty-seven thousand, seven hundred thirty-nine".