23942940 has 96 divisors (see below), whose sum is σ = 77468160. Its totient is φ = 5412096.

The previous prime is 23942939. The next prime is 23942969. The reversal of 23942940 is 4924932.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45519 + ... + 46041.

It is an arithmetic number, because the mean of its divisors is an integer number (806960).

Almost surely, 2^23942940 is an apocalyptic number.

23942940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23942940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38734080).

23942940 is an abundant number, since it is smaller than the sum of its proper divisors (53525220).

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

23942940 is a wasteful number, since it uses less digits than its factorization.

23942940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 23942940 is about 4893.1523581430. The cubic root of 23942940 is about 288.2211361022.

The spelling of 23942940 in words is "twenty-three million, nine hundred forty-two thousand, nine hundred forty".