23397505 has 8 divisors (see below), whose sum is σ = 28836072. Its totient is φ = 18211968.

The previous prime is 23397503. The next prime is 23397523. The reversal of 23397505 is 50579332.

It can be written as a sum of positive squares in 4 ways, for example, as 2521744 + 20875761 = 1588^2 + 4569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23397505 - 2¹ = 23397503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23397503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63052 + ... + 63421.

It is an arithmetic number, because the mean of its divisors is an integer number (3604509).

Almost surely, 2^23397505 is an apocalyptic number.

It is an amenable number.

23397505 is a deficient number, since it is larger than the sum of its proper divisors (5438567).

23397505 is a wasteful number, since it uses less digits than its factorization.

23397505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126515.

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 23397505 is about 4837.0967532188. The cubic root of 23397505 is about 286.0156845034.

The spelling of 23397505 in words is "twenty-three million, three hundred ninety-seven thousand, five hundred five".