23008457 has 4 divisors (see below), whose sum is σ = 23021460. Its totient is φ = 22995456.

The previous prime is 23008409. The next prime is 23008549. The reversal of 23008457 is 75480032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 246016 + 22762441 = 496^2 + 4771^2 .

It is a cyclic number.

It is not a de Polignac number, because 23008457 - 2⁶ = 23008393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23008057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3332 + ... + 7557.

It is an arithmetic number, because the mean of its divisors is an integer number (5755365).

Almost surely, 2^23008457 is an apocalyptic number.

It is an amenable number.

23008457 is a deficient number, since it is larger than the sum of its proper divisors (13003).

23008457 is a wasteful number, since it uses less digits than its factorization.

23008457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13002.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 23008457 is about 4796.7131454778. The cubic root of 23008457 is about 284.4215496314.

Adding to 23008457 its reverse (75480032), we get a palindrome (98488489).

The spelling of 23008457 in words is "twenty-three million, eight thousand, four hundred fifty-seven".