2210256 has 30 divisors (see below), whose sum is σ = 6186050. Its totient is φ = 736704.

The previous prime is 2210249. The next prime is 2210261. The reversal of 2210256 is 6520122.

It can be written as a sum of positive squares in only one way, i.e., 1742400 + 467856 = 1320^2 + 684^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7531 + ... + 7818.

2^2210256 is an apocalyptic number.

It is an amenable number.

2210256 is an abundant number, since it is smaller than the sum of its proper divisors (3975794).

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

2210256 is a wasteful number, since it uses less digits than its factorization.

2210256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15363 (or 15354 counting only the distinct ones).

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

The square root of 2210256 is about 1486.6929743562. The cubic root of 2210256 is about 130.2609354671.

Adding to 2210256 its reverse (6520122), we get a palindrome (8730378).

The spelling of 2210256 in words is "two million, two hundred ten thousand, two hundred fifty-six".