23256320 has 36 divisors (see below), whose sum is σ = 55709220. Its totient is φ = 9302016.

The previous prime is 23256319. The next prime is 23256371. The reversal of 23256320 is 2365232.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5683456 + 17572864 = 2384^2 + 4192^2 .

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, 7805 + ... + 10364.

Almost surely, 2^23256320 is an apocalyptic number.

23256320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23256320 is an abundant number, since it is smaller than the sum of its proper divisors (32452900).

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

23256320 is an equidigital number, since it uses as much as digits as its factorization.

23256320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18190 (or 18176 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 23256320 is about 4822.4806894378. The cubic root of 23256320 is about 285.4392324378.

The spelling of 23256320 in words is "twenty-three million, two hundred fifty-six thousand, three hundred twenty".