23996405 has 4 divisors (see below), whose sum is σ = 28795692. Its totient is φ = 19197120.

The previous prime is 23996393. The next prime is 23996443. The reversal of 23996405 is 50469932.

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 5134756 + 18861649 = 2266^2 + 4343^2 .

It is not a de Polignac number, because 23996405 - 2⁴ = 23996389 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, 2399636 + ... + 2399645.

It is an arithmetic number, because the mean of its divisors is an integer number (7198923).

Almost surely, 2^23996405 is an apocalyptic number.

It is an amenable number.

23996405 is a deficient number, since it is larger than the sum of its proper divisors (4799287).

23996405 is an equidigital number, since it uses as much as digits as its factorization.

23996405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799286.

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

The square root of 23996405 is about 4898.6125586741. The cubic root of 23996405 is about 288.4355108778.

The spelling of 23996405 in words is "twenty-three million, nine hundred ninety-six thousand, four hundred five".