23940156 has 12 divisors (see below), whose sum is σ = 55860392. Its totient is φ = 7980048.

The previous prime is 23940149. The next prime is 23940179. The reversal of 23940156 is 65104932.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 997495 + ... + 997518.

Almost surely, 2^23940156 is an apocalyptic number.

It is an amenable number.

23940156 is an abundant number, since it is smaller than the sum of its proper divisors (31920236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23940156 is a wasteful number, since it uses less digits than its factorization.

23940156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995020 (or 1995018 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 23940156 is about 4892.8678706869. The cubic root of 23940156 is about 288.2099645592.

The spelling of 23940156 in words is "twenty-three million, nine hundred forty thousand, one hundred fifty-six".