2255988 has 48 divisors (see below), whose sum is σ = 6096384. Its totient is φ = 636000.

The previous prime is 2255987. The next prime is 2255989. The reversal of 2255988 is 8895522.

It is an interprime number because it is at equal distance from previous prime (2255987) and next prime (2255989).

It is a super-2 number, since 2×2255988² = 10178963712288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8863 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2^2255988 is an apocalyptic number.

2255988 is a gapful number since it is divisible by the number (28) 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 2255988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3048192).

2255988 is an abundant number, since it is smaller than the sum of its proper divisors (3840396).

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

2255988 is a wasteful number, since it uses less digits than its factorization.

2255988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 370 counting only the distinct ones).

The product of its digits is 57600, while the sum is 39.

The square root of 2255988 is about 1501.9946737589. The cubic root of 2255988 is about 131.1532111814.

The spelling of 2255988 in words is "two million, two hundred fifty-five thousand, nine hundred eighty-eight".