23320405 has 16 divisors (see below), whose sum is σ = 29018880. Its totient is φ = 17978688.

The previous prime is 23320387. The next prime is 23320421. The reversal of 23320405 is 50402332.

It is a cyclic number.

It is not a de Polignac number, because 23320405 - 2⁵ = 23320373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16299 + ... + 17671.

It is an arithmetic number, because the mean of its divisors is an integer number (1813680).

Almost surely, 2^23320405 is an apocalyptic number.

It is an amenable number.

23320405 is a deficient number, since it is larger than the sum of its proper divisors (5698475).

23320405 is a wasteful number, since it uses less digits than its factorization.

23320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 23320405 is about 4829.1205203432. The cubic root of 23320405 is about 285.7011769581.

Adding to 23320405 its reverse (50402332), we get a palindrome (73722737).

The spelling of 23320405 in words is "twenty-three million, three hundred twenty thousand, four hundred five".