23398457 has 4 divisors (see below), whose sum is σ = 23694720. Its totient is φ = 23102196.

The previous prime is 23398451. The next prime is 23398469. The reversal of 23398457 is 75489332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23398457 - 2¹² = 23394361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23398451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148013 + ... + 148170.

It is an arithmetic number, because the mean of its divisors is an integer number (5923680).

Almost surely, 2^23398457 is an apocalyptic number.

It is an amenable number.

23398457 is a deficient number, since it is larger than the sum of its proper divisors (296263).

23398457 is an equidigital number, since it uses as much as digits as its factorization.

23398457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296262.

The product of its digits is 181440, while the sum is 41.

The square root of 23398457 is about 4837.1951583537. The cubic root of 23398457 is about 286.0195635956.

The spelling of 23398457 in words is "twenty-three million, three hundred ninety-eight thousand, four hundred fifty-seven".