2255868 has 36 divisors (see below), whose sum is σ = 5748288. Its totient is φ = 745920.

The previous prime is 2255867. The next prime is 2255887. The reversal of 2255868 is 8685522.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7888 + ... + 8168.

2^2255868 is an apocalyptic number.

It is an amenable number.

2255868 is an abundant number, since it is smaller than the sum of its proper divisors (3492420).

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

2255868 is a wasteful number, since it uses less digits than its factorization.

2255868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 509 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 2255868 is about 1501.9547263483. The cubic root of 2255868 is about 131.1508857163.

The spelling of 2255868 in words is "two million, two hundred fifty-five thousand, eight hundred sixty-eight".