23388257 has 2 divisors, whose sum is σ = 23388258. Its totient is φ = 23388256.

The previous prime is 23388241. The next prime is 23388269. The reversal of 23388257 is 75288332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20511841 + 2876416 = 4529^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 23388257 - 2⁴ = 23388241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23388257.

It is not a weakly prime, because it can be changed into another prime (23388227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11694128 + 11694129.

It is an arithmetic number, because the mean of its divisors is an integer number (11694129).

Almost surely, 2^23388257 is an apocalyptic number.

It is an amenable number.

23388257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23388257 is an equidigital number, since it uses as much as digits as its factorization.

23388257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 23388257 is about 4836.1407134202. The cubic root of 23388257 is about 285.9779964163.

The spelling of 23388257 in words is "twenty-three million, three hundred eighty-eight thousand, two hundred fifty-seven".