23157389 has 8 divisors (see below), whose sum is σ = 24312960. Its totient is φ = 22014256.

The previous prime is 23157373. The next prime is 23157397. The reversal of 23157389 is 98375132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23157389 - 2⁴ = 23157373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827 + ... + 6855.

It is an arithmetic number, because the mean of its divisors is an integer number (3039120).

Almost surely, 2^23157389 is an apocalyptic number.

It is an amenable number.

23157389 is a deficient number, since it is larger than the sum of its proper divisors (1155571).

23157389 is a wasteful number, since it uses less digits than its factorization.

23157389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219.

The product of its digits is 45360, while the sum is 38.

The square root of 23157389 is about 4812.2124849179. The cubic root of 23157389 is about 285.0339099900.

The spelling of 23157389 in words is "twenty-three million, one hundred fifty-seven thousand, three hundred eighty-nine".