23496509 has 4 divisors (see below), whose sum is σ = 23516160. Its totient is φ = 23476860.

The previous prime is 23496503. The next prime is 23496511. The reversal of 23496509 is 90569432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23496509 - 2⁴ = 23496493 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23496503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7907 + ... + 10464.

It is an arithmetic number, because the mean of its divisors is an integer number (5879040).

Almost surely, 2^23496509 is an apocalyptic number.

It is an amenable number.

23496509 is a deficient number, since it is larger than the sum of its proper divisors (19651).

23496509 is a wasteful number, since it uses less digits than its factorization.

23496509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19650.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 23496509 is about 4847.3197748859. The cubic root of 23496509 is about 286.4185315987.

The spelling of 23496509 in words is "twenty-three million, four hundred ninety-six thousand, five hundred nine".