23138575 has 12 divisors (see below), whose sum is σ = 29940048. Its totient is φ = 17705600.

The previous prime is 23138567. The next prime is 23138597. The reversal of 23138575 is 57583132.

It is not a de Polignac number, because 23138575 - 2³ = 23138567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23138575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19546 + ... + 20695.

It is an arithmetic number, because the mean of its divisors is an integer number (2495004).

Almost surely, 2^23138575 is an apocalyptic number.

23138575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23138575 is a deficient number, since it is larger than the sum of its proper divisors (6801473).

23138575 is a wasteful number, since it uses less digits than its factorization.

23138575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40274 (or 40269 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 23138575 is about 4810.2572696271. The cubic root of 23138575 is about 284.9566980482.

The spelling of 23138575 in words is "twenty-three million, one hundred thirty-eight thousand, five hundred seventy-five".