23400605 has 16 divisors (see below), whose sum is σ = 28728000. Its totient is φ = 18294528.

The previous prime is 23400529. The next prime is 23400617. The reversal of 23400605 is 50600432.

It is not a de Polignac number, because 23400605 - 2¹⁸ = 23138461 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46646 + ... + 47144.

It is an arithmetic number, because the mean of its divisors is an integer number (1795500).

Almost surely, 2^23400605 is an apocalyptic number.

It is an amenable number.

23400605 is a deficient number, since it is larger than the sum of its proper divisors (5327395).

23400605 is a wasteful number, since it uses less digits than its factorization.

23400605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23400605 is about 4837.4171827536. The cubic root of 23400605 is about 286.0283156147.

The spelling of 23400605 in words is "twenty-three million, four hundred thousand, six hundred five".