23297138 has 6 divisors (see below), whose sum is σ = 34955949. Its totient is φ = 11645156.

The previous prime is 23297117. The next prime is 23297149. The reversal of 23297138 is 83179232.

It can be written as a sum of positive squares in 2 ways, for example, as 17032129 + 6265009 = 4127^2 + 2503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3413.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23297098 and 23297107.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5120 + ... + 8532.

Almost surely, 2^23297138 is an apocalyptic number.

23297138 is a deficient number, since it is larger than the sum of its proper divisors (11658811).

23297138 is an frugal number, since it uses more digits than its factorization.

23297138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828 (or 3415 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 23297138 is about 4826.7108883794. The cubic root of 23297138 is about 285.6061297060.

The spelling of 23297138 in words is "twenty-three million, two hundred ninety-seven thousand, one hundred thirty-eight".