23393986 has 16 divisors (see below), whose sum is σ = 43750080. Its totient is φ = 9114480.

The previous prime is 23393971. The next prime is 23393987. The reversal of 23393986 is 68939332.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23393987) by changing a digit.

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, 75801 + ... + 76108.

It is an arithmetic number, because the mean of its divisors is an integer number (2734380).

Almost surely, 2^23393986 is an apocalyptic number.

23393986 is a deficient number, since it is larger than the sum of its proper divisors (20356094).

23393986 is a wasteful number, since it uses less digits than its factorization.

23393986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151929.

The product of its digits is 209952, while the sum is 43.

The square root of 23393986 is about 4836.7329882887. The cubic root of 23393986 is about 286.0013448027.

The spelling of 23393986 in words is "twenty-three million, three hundred ninety-three thousand, nine hundred eighty-six".