23840072 has 16 divisors (see below), whose sum is σ = 44779500. Its totient is φ = 11898880.

The previous prime is 23840057. The next prime is 23840077. The reversal of 23840072 is 27004832.

It can be written as a sum of positive squares in 2 ways, for example, as 17255716 + 6584356 = 4154^2 + 2566^2 .

It is not an unprimeable number, because it can be changed into a prime (23840077) 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, 2804 + ... + 7452.

Almost surely, 2^23840072 is an apocalyptic number.

It is an amenable number.

23840072 is a deficient number, since it is larger than the sum of its proper divisors (20939428).

23840072 is a wasteful number, since it uses less digits than its factorization.

23840072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296 (or 5292 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 23840072 is about 4882.6296193752. The cubic root of 23840072 is about 287.8077742479.

The spelling of 23840072 in words is "twenty-three million, eight hundred forty thousand, seventy-two".