23630405 has 4 divisors (see below), whose sum is σ = 28356492. Its totient is φ = 18904320.

The previous prime is 23630393. The next prime is 23630413. The reversal of 23630405 is 50403632.

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 10329796 + 13300609 = 3214^2 + 3647^2 .

It is not a de Polignac number, because 23630405 - 2¹⁰ = 23629381 is a prime.

It is a Duffinian number.

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, 2363036 + ... + 2363045.

It is an arithmetic number, because the mean of its divisors is an integer number (7089123).

Almost surely, 2^23630405 is an apocalyptic number.

It is an amenable number.

23630405 is a deficient number, since it is larger than the sum of its proper divisors (4726087).

23630405 is an equidigital number, since it uses as much as digits as its factorization.

23630405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726086.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 23630405 is about 4861.1114984127. Note that the first 3 decimals coincide. The cubic root of 23630405 is about 286.9615580606.

The spelling of 23630405 in words is "twenty-three million, six hundred thirty thousand, four hundred five".