23393457 has 6 divisors (see below), whose sum is σ = 33790562. Its totient is φ = 15595632.

The previous prime is 23393453. The next prime is 23393473. The reversal of 23393457 is 75439332.

It can be written as a sum of positive squares in only one way, i.e., 23386896 + 6561 = 4836^2 + 81^2 .

It is not a de Polignac number, because 23393457 - 2² = 23393453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23393453) 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 5 ways as a sum of consecutive naturals, for example, 1299628 + ... + 1299645.

Almost surely, 2^23393457 is an apocalyptic number.

It is an amenable number.

23393457 is a deficient number, since it is larger than the sum of its proper divisors (10397105).

23393457 is a wasteful number, since it uses less digits than its factorization.

23393457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599279 (or 2599276 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 23393457 is about 4836.6783023062. The cubic root of 23393457 is about 285.9991890371. Note that the first 3 decimals are identical.

The spelling of 23393457 in words is "twenty-three million, three hundred ninety-three thousand, four hundred fifty-seven".