23457240 has 96 divisors (see below), whose sum is σ = 79578720. Its totient is φ = 5981184.

The previous prime is 23457227. The next prime is 23457241. The reversal of 23457240 is 4275432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23457241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6864 + ... + 9696.

It is an arithmetic number, because the mean of its divisors is an integer number (828945).

Almost surely, 2^23457240 is an apocalyptic number.

23457240 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 23457240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39789360).

23457240 is an abundant number, since it is smaller than the sum of its proper divisors (56121480).

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

23457240 is a wasteful number, since it uses less digits than its factorization.

23457240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 23457240 is about 4843.2674920966. The cubic root of 23457240 is about 286.2588817696.

The spelling of 23457240 in words is "twenty-three million, four hundred fifty-seven thousand, two hundred forty".