23039645 has 4 divisors (see below), whose sum is σ = 27647580. Its totient is φ = 18431712.

The previous prime is 23039587. The next prime is 23039651. The reversal of 23039645 is 54693032.

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 4056196 + 18983449 = 2014^2 + 4357^2 .

It is a cyclic number.

It is not a de Polignac number, because 23039645 - 2²⁰ = 21991069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2303960 + ... + 2303969.

It is an arithmetic number, because the mean of its divisors is an integer number (6911895).

Almost surely, 2^23039645 is an apocalyptic number.

It is an amenable number.

23039645 is a deficient number, since it is larger than the sum of its proper divisors (4607935).

23039645 is an equidigital number, since it uses as much as digits as its factorization.

23039645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607934.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 23039645 is about 4799.9630206909. The cubic root of 23039645 is about 284.5500028967.

The spelling of 23039645 in words is "twenty-three million, thirty-nine thousand, six hundred forty-five".