2256941988 has 48 divisors (see below), whose sum is σ = 6687237760. Its totient is φ = 644840352.

The previous prime is 2256941969. The next prime is 2256941993. The reversal of 2256941988 is 8891496522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1491931 + ... + 1493442.

Almost surely, 2^2256941988 is an apocalyptic number.

2256941988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2256941988 is an abundant number, since it is smaller than the sum of its proper divisors (4430295772).

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

2256941988 is a wasteful number, since it uses less digits than its factorization.

2256941988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985393 (or 2985385 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 2256941988 is about 47507.2835257921. The cubic root of 2256941988 is about 1311.7169546376.

The spelling of 2256941988 in words is "two billion, two hundred fifty-six million, nine hundred forty-one thousand, nine hundred eighty-eight".