23256240 has 160 divisors (see below), whose sum is σ = 83804160. Its totient is φ = 5225472.

The previous prime is 23256227. The next prime is 23256251. The reversal of 23256240 is 4265232.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23256240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183057 + ... + 183183.

It is an arithmetic number, because the mean of its divisors is an integer number (523776).

Almost surely, 2^23256240 is an apocalyptic number.

23256240 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 23256240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41902080).

23256240 is an abundant number, since it is smaller than the sum of its proper divisors (60547920).

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

23256240 is a wasteful number, since it uses less digits than its factorization.

23256240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 23256240 is about 4822.4723949443. The cubic root of 23256240 is about 285.4389051409.

The spelling of 23256240 in words is "twenty-three million, two hundred fifty-six thousand, two hundred forty".