2102256 has 60 divisors (see below), whose sum is σ = 6341608. Its totient is φ = 646272.

The previous prime is 2102251. The next prime is 2102257. The reversal of 2102256 is 6522012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1311 + ... + 2433.

2^2102256 is an apocalyptic number.

2102256 is a gapful number since it is divisible by the number (26) 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 2102256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3170804).

2102256 is an abundant number, since it is smaller than the sum of its proper divisors (4239352).

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

2102256 is a wasteful number, since it uses less digits than its factorization.

2102256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2102256 is about 1449.9158596277. The cubic root of 2102256 is about 128.1037570175.

Adding to 2102256 its reverse (6522012), we get a palindrome (8624268).

The spelling of 2102256 in words is "two million, one hundred two thousand, two hundred fifty-six".