23724457 has 2 divisors, whose sum is σ = 23724458. Its totient is φ = 23724456.

The previous prime is 23724439. The next prime is 23724497. The reversal of 23724457 is 75442732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23386896 + 337561 = 4836^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 23724457 - 2⁷ = 23724329 is a prime.

It is not a weakly prime, because it can be changed into another prime (23724497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11862228 + 11862229.

It is an arithmetic number, because the mean of its divisors is an integer number (11862229).

Almost surely, 2^23724457 is an apocalyptic number.

It is an amenable number.

23724457 is a deficient number, since it is larger than the sum of its proper divisors (1).

23724457 is an equidigital number, since it uses as much as digits as its factorization.

23724457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 34.

The square root of 23724457 is about 4870.7758108950. The cubic root of 23724457 is about 287.3417685066.

The spelling of 23724457 in words is "twenty-three million, seven hundred twenty-four thousand, four hundred fifty-seven".