23057639 has 12 divisors (see below), whose sum is σ = 26222280. Its totient is φ = 20235600.

The previous prime is 23057633. The next prime is 23057641. The reversal of 23057639 is 93675032.

It is not a de Polignac number, because 23057639 - 2²⁰ = 22009063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23057599 and 23057608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23057633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224 + ... + 6794.

It is an arithmetic number, because the mean of its divisors is an integer number (2185190).

Almost surely, 2^23057639 is an apocalyptic number.

23057639 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

23057639 is a deficient number, since it is larger than the sum of its proper divisors (3164641).

23057639 is a wasteful number, since it uses less digits than its factorization.

23057639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622 (or 6611 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 23057639 is about 4801.8370442988. The cubic root of 23057639 is about 284.6240616242.

The spelling of 23057639 in words is "twenty-three million, fifty-seven thousand, six hundred thirty-nine".