23241440 has 24 divisors (see below), whose sum is σ = 54908280. Its totient is φ = 9296512.

The previous prime is 23241433. The next prime is 23241451. The reversal of 23241440 is 4414232.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72470 + ... + 72789.

It is an arithmetic number, because the mean of its divisors is an integer number (2287845).

Almost surely, 2^23241440 is an apocalyptic number.

23241440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23241440 is an abundant number, since it is smaller than the sum of its proper divisors (31666840).

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

23241440 is a wasteful number, since it uses less digits than its factorization.

23241440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145274 (or 145266 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 23241440 is about 4820.9376681305. The cubic root of 23241440 is about 285.3783422947.

Adding to 23241440 its reverse (4414232), we get a palindrome (27655672).

The spelling of 23241440 in words is "twenty-three million, two hundred forty-one thousand, four hundred forty".