23181852 has 12 divisors (see below), whose sum is σ = 54091016. Its totient is φ = 7727280.

The previous prime is 23181797. The next prime is 23181883. The reversal of 23181852 is 25818132.

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

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965899 + ... + 965922.

Almost surely, 2^23181852 is an apocalyptic number.

It is an amenable number.

23181852 is an abundant number, since it is smaller than the sum of its proper divisors (30909164).

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

23181852 is a wasteful number, since it uses less digits than its factorization.

23181852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931828 (or 1931826 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 23181852 is about 4814.7535762487. The cubic root of 23181852 is about 285.1342426984.

Adding to 23181852 its reverse (25818132), we get a palindrome (48999984).

The spelling of 23181852 in words is "twenty-three million, one hundred eighty-one thousand, eight hundred fifty-two".