23902240 has 96 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 8985600.

The previous prime is 23902237. The next prime is 23902261. The reversal of 23902240 is 4220932.

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, 302521 + ... + 302599.

It is an arithmetic number, because the mean of its divisors is an integer number (624960).

Almost surely, 2^23902240 is an apocalyptic number.

23902240 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 23902240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29998080).

23902240 is an abundant number, since it is smaller than the sum of its proper divisors (36093920).

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

23902240 is a wasteful number, since it uses less digits than its factorization.

23902240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23902240 is about 4888.9917160903. The cubic root of 23902240 is about 288.0577301966.

It can be divided in two parts, 23902 and 240, that added together give a palindrome (24142).

The spelling of 23902240 in words is "twenty-three million, nine hundred two thousand, two hundred forty".