23890605 has 16 divisors (see below), whose sum is σ = 38529024. Its totient is φ = 12640320.

The previous prime is 23890597. The next prime is 23890621. The reversal of 23890605 is 50609832.

It is a happy number.

It is not a de Polignac number, because 23890605 - 2³ = 23890597 is a prime.

It is a super-2 number, since 2×23890605² = 1141522014532050, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 4366 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (2408064).

Almost surely, 2^23890605 is an apocalyptic number.

It is an amenable number.

23890605 is a deficient number, since it is larger than the sum of its proper divisors (14638419).

23890605 is a wasteful number, since it uses less digits than its factorization.

23890605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12676.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 23890605 is about 4887.8016530952. The cubic root of 23890605 is about 288.0109828952.

The spelling of 23890605 in words is "twenty-three million, eight hundred ninety thousand, six hundred five".