23285457 has 12 divisors (see below), whose sum is σ = 36222004. Its totient is φ = 14329440.

The previous prime is 23285429. The next prime is 23285459. The reversal of 23285457 is 75458232.

It can be written as a sum of positive squares in 2 ways, for example, as 1718721 + 21566736 = 1311^2 + 4644^2 .

It is not a de Polignac number, because 23285457 - 2⁸ = 23285201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23285459) 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 11 ways as a sum of consecutive naturals, for example, 99394 + ... + 99627.

Almost surely, 2^23285457 is an apocalyptic number.

It is an amenable number.

23285457 is a deficient number, since it is larger than the sum of its proper divisors (12936547).

23285457 is a wasteful number, since it uses less digits than its factorization.

23285457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199040 (or 199037 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 23285457 is about 4825.5006994093. The cubic root of 23285457 is about 285.5583881775.

The spelling of 23285457 in words is "twenty-three million, two hundred eighty-five thousand, four hundred fifty-seven".