23957986 has 16 divisors (see below), whose sum is σ = 38808000. Its totient is φ = 11027088.

The previous prime is 23957977. The next prime is 23958013. The reversal of 23957986 is 68975932.

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, 10365 + ... + 12463.

It is an arithmetic number, because the mean of its divisors is an integer number (2425500).

Almost surely, 2^23957986 is an apocalyptic number.

23957986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23957986 is a deficient number, since it is larger than the sum of its proper divisors (14850014).

23957986 is a wasteful number, since it uses less digits than its factorization.

23957986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553.

The product of its digits is 816480, while the sum is 49.

The square root of 23957986 is about 4894.6895713620. The cubic root of 23957986 is about 288.2814972100.

The spelling of 23957986 in words is "twenty-three million, nine hundred fifty-seven thousand, nine hundred eighty-six".