23012405 has 8 divisors (see below), whose sum is σ = 29739192. Its totient is φ = 16993728.

The previous prime is 23012393. The next prime is 23012411. The reversal of 23012405 is 50421032.

It can be written as a sum of positive squares in 4 ways, for example, as 1119364 + 21893041 = 1058^2 + 4679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23012405 - 2⁸ = 23012149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176954 + ... + 177083.

It is an arithmetic number, because the mean of its divisors is an integer number (3717399).

Almost surely, 2^23012405 is an apocalyptic number.

It is an amenable number.

23012405 is a deficient number, since it is larger than the sum of its proper divisors (6726787).

23012405 is a wasteful number, since it uses less digits than its factorization.

23012405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354055.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 23012405 is about 4797.1246596268. The cubic root of 23012405 is about 284.4378165785.

Adding to 23012405 its reverse (50421032), we get a palindrome (73433437).

The spelling of 23012405 in words is "twenty-three million, twelve thousand, four hundred five".