23413440 has 112 divisors (see below), whose sum is σ = 76992480. Its totient is φ = 6028288.

The previous prime is 23413433. The next prime is 23413441. The reversal of 23413440 is 4431432.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23413441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807346 + ... + 807374.

Almost surely, 2^23413440 is an apocalyptic number.

23413440 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 23413440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38496240).

23413440 is an abundant number, since it is smaller than the sum of its proper divisors (53579040).

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

23413440 is an frugal number, since it uses more digits than its factorization.

23413440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 23413440 is about 4838.7436385905. The cubic root of 23413440 is about 286.0806006223.

Adding to 23413440 its reverse (4431432), we get a palindrome (27844872).

The spelling of 23413440 in words is "twenty-three million, four hundred thirteen thousand, four hundred forty".