23945740 has 96 divisors (see below), whose sum is σ = 63221760. Its totient is φ = 7416576.

The previous prime is 23945699. The next prime is 23945743. The reversal of 23945740 is 4754932.

It is a junction number, because it is equal to n+sod(n) for n = 23945696 and 23945705.

It is not an unprimeable number, because it can be changed into a prime (23945743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107269 + ... + 107491.

It is an arithmetic number, because the mean of its divisors is an integer number (658560).

Almost surely, 2^23945740 is an apocalyptic number.

23945740 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 23945740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31610880).

23945740 is an abundant number, since it is smaller than the sum of its proper divisors (39276020).

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

23945740 is a wasteful number, since it uses less digits than its factorization.

23945740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 23945740 is about 4893.4384639025. The cubic root of 23945740 is about 288.2323709759.

The spelling of 23945740 in words is "twenty-three million, nine hundred forty-five thousand, seven hundred forty".