23404765 has 4 divisors (see below), whose sum is σ = 28085724. Its totient is φ = 18723808.

The previous prime is 23404763. The next prime is 23404781. The reversal of 23404765 is 56740432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13235044 + 10169721 = 3638^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 23404765 - 2¹ = 23404763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23404763) 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, 2340472 + ... + 2340481.

It is an arithmetic number, because the mean of its divisors is an integer number (7021431).

Almost surely, 2^23404765 is an apocalyptic number.

It is an amenable number.

23404765 is a deficient number, since it is larger than the sum of its proper divisors (4680959).

23404765 is an equidigital number, since it uses as much as digits as its factorization.

23404765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680958.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 23404765 is about 4837.8471451669. The cubic root of 23404765 is about 286.0452639983.

The spelling of 23404765 in words is "twenty-three million, four hundred four thousand, seven hundred sixty-five".