2256866442 has 16 divisors (see below), whose sum is σ = 5015258880. Its totient is φ = 752288796.

The previous prime is 2256866441. The next prime is 2256866477. The reversal of 2256866442 is 2446686522.

2256866442 is a `hidden beast` number, since 22 + 568 + 6 + 64 + 4 + 2 = 666.

It is a super-2 number, since 2×2256866442² = 10186892274051478728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2256866441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20896858 + ... + 20896965.

It is an arithmetic number, because the mean of its divisors is an integer number (313453680).

Almost surely, 2^2256866442 is an apocalyptic number.

2256866442 is an abundant number, since it is smaller than the sum of its proper divisors (2758392438).

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

2256866442 is a wasteful number, since it uses less digits than its factorization.

2256866442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41793834 (or 41793828 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The square root of 2256866442 is about 47506.4884200043. The cubic root of 2256866442 is about 1311.7023188937.

The spelling of 2256866442 in words is "two billion, two hundred fifty-six million, eight hundred sixty-six thousand, four hundred forty-two".