23889140 has 24 divisors (see below), whose sum is σ = 54728352. Its totient is φ = 8686880.

The previous prime is 23889133. The next prime is 23889163. The reversal of 23889140 is 4198832.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23889140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54074 + ... + 54513.

It is an arithmetic number, because the mean of its divisors is an integer number (2280348).

Almost surely, 2^23889140 is an apocalyptic number.

23889140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23889140 is an abundant number, since it is smaller than the sum of its proper divisors (30839212).

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

23889140 is a wasteful number, since it uses less digits than its factorization.

23889140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108607 (or 108605 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 23889140 is about 4887.6517879243. The cubic root of 23889140 is about 288.0050957175.

The spelling of 23889140 in words is "twenty-three million, eight hundred eighty-nine thousand, one hundred forty".