23943516 has 12 divisors (see below), whose sum is σ = 55868232. Its totient is φ = 7981168.

The previous prime is 23943511. The next prime is 23943523. The reversal of 23943516 is 61534932.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23943511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997635 + ... + 997658.

It is an arithmetic number, because the mean of its divisors is an integer number (4655686).

Almost surely, 2^23943516 is an apocalyptic number.

It is an amenable number.

23943516 is an abundant number, since it is smaller than the sum of its proper divisors (31924716).

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

23943516 is a wasteful number, since it uses less digits than its factorization.

23943516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995300 (or 1995298 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 23943516 is about 4893.2112155516. The cubic root of 23943516 is about 288.2234473477.

The spelling of 23943516 in words is "twenty-three million, nine hundred forty-three thousand, five hundred sixteen".