2160256 has 32 divisors (see below), whose sum is σ = 4920480. Its totient is φ = 925440.

The previous prime is 2160253. The next prime is 2160259. The reversal of 2160256 is 6520612.

It is an interprime number because it is at equal distance from previous prime (2160253) and next prime (2160259).

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (2160253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (153765).

2^2160256 is an apocalyptic number.

It is an amenable number.

2160256 is an abundant number, since it is smaller than the sum of its proper divisors (2760224).

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

2160256 is an equidigital number, since it uses as much as digits as its factorization.

2160256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2160256 is about 1469.7809360582. The cubic root of 2160256 is about 129.2711880083.

Adding to 2160256 its reverse (6520612), we get a palindrome (8680868).

The spelling of 2160256 in words is "two million, one hundred sixty thousand, two hundred fifty-six".