23768257 has 2 divisors, whose sum is σ = 23768258. Its totient is φ = 23768256.

The previous prime is 23768249. The next prime is 23768263. The reversal of 23768257 is 75286732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23726641 + 41616 = 4871^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 23768257 - 2³ = 23768249 is a prime.

It is not a weakly prime, because it can be changed into another prime (23768237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11884128 + 11884129.

It is an arithmetic number, because the mean of its divisors is an integer number (11884129).

Almost surely, 2^23768257 is an apocalyptic number.

It is an amenable number.

23768257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23768257 is an equidigital number, since it uses as much as digits as its factorization.

23768257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 23768257 is about 4875.2699412443. The cubic root of 23768257 is about 287.5184895481.

It can be divided in two parts, 23768 and 257, that added together give a square (24025 = 155²).

The spelling of 23768257 in words is "twenty-three million, seven hundred sixty-eight thousand, two hundred fifty-seven".