23210040 has 64 divisors (see below), whose sum is σ = 79580160. Its totient is φ = 5304960.

The previous prime is 23210021. The next prime is 23210053. The reversal of 23210040 is 4001232.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23209998 and 23210025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12976 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (1243440).

Almost surely, 2^23210040 is an apocalyptic number.

23210040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23210040 is an abundant number, since it is smaller than the sum of its proper divisors (56370120).

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

23210040 is a wasteful number, since it uses less digits than its factorization.

23210040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27652 (or 27648 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 23210040 is about 4817.6799395560. The cubic root of 23210040 is about 285.2497656594.

Adding to 23210040 its reverse (4001232), we get a palindrome (27211272).

The spelling of 23210040 in words is "twenty-three million, two hundred ten thousand, forty".