23880040 has 32 divisors (see below), whose sum is σ = 55044360. Its totient is φ = 9318400.

The previous prime is 23880037. The next prime is 23880071. The reversal of 23880040 is 4008832.

It can be written as a sum of positive squares in 4 ways, for example, as 17994564 + 5885476 = 4242^2 + 2426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23879987 and 23880014.

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, 5641 + ... + 8920.

Almost surely, 2^23880040 is an apocalyptic number.

23880040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23880040 is an abundant number, since it is smaller than the sum of its proper divisors (31164320).

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

23880040 is a wasteful number, since it uses less digits than its factorization.

23880040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14613 (or 14609 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 23880040 is about 4886.7207818741. The cubic root of 23880040 is about 287.9685215081.

Adding to 23880040 its reverse (4008832), we get a palindrome (27888872).

The spelling of 23880040 in words is "twenty-three million, eight hundred eighty thousand, forty".