23712040 has 32 divisors (see below), whose sum is σ = 58203360. Its totient is φ = 8622400.

The previous prime is 23712023. The next prime is 23712067. The reversal of 23712040 is 4021732.

It is a junction number, because it is equal to n+sod(n) for n = 23711999 and 23712017.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26506 + ... + 27385.

It is an arithmetic number, because the mean of its divisors is an integer number (1818855).

Almost surely, 2^23712040 is an apocalyptic number.

23712040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23712040 is an abundant number, since it is smaller than the sum of its proper divisors (34491320).

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

23712040 is a wasteful number, since it uses less digits than its factorization.

23712040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53913 (or 53909 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 23712040 is about 4869.5010011294. The cubic root of 23712040 is about 287.2916297351.

Adding to 23712040 its reverse (4021732), we get a palindrome (27733772).

The spelling of 23712040 in words is "twenty-three million, seven hundred twelve thousand, forty".