23887994 has 16 divisors (see below), whose sum is σ = 39531240. Its totient is φ = 10755840.

The previous prime is 23887993. The next prime is 23887999. The reversal of 23887994 is 49978832.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10660225 + 13227769 = 3265^2 + 3637^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23887993) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10139 + ... + 12270.

Almost surely, 2^23887994 is an apocalyptic number.

23887994 is a deficient number, since it is larger than the sum of its proper divisors (15643246).

23887994 is a wasteful number, since it uses less digits than its factorization.

23887994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22465.

The product of its digits is 870912, while the sum is 50.

The square root of 23887994 is about 4887.5345523075. The cubic root of 23887994 is about 288.0004902898. Note that the first 3 decimals are identical.

The spelling of 23887994 in words is "twenty-three million, eight hundred eighty-seven thousand, nine hundred ninety-four".