1108642256 has 20 divisors (see below), whose sum is σ = 2169264804. Its totient is φ = 548832000.

The previous prime is 1108642253. The next prime is 1108642277. The reversal of 1108642256 is 6522468011.

It can be written as a sum of positive squares in 2 ways, for example, as 471584656 + 637057600 = 21716^2 + 25240^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108642253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341405 + ... + 344636.

Almost surely, 2^1108642256 is an apocalyptic number.

1108642256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1108642256 is a deficient number, since it is larger than the sum of its proper divisors (1060622548).

1108642256 is a wasteful number, since it uses less digits than its factorization.

1108642256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686150 (or 686144 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1108642256 is about 33296.2799123265. The cubic root of 1108642256 is about 1034.9764690831.

The spelling of 1108642256 in words is "one billion, one hundred eight million, six hundred forty-two thousand, two hundred fifty-six".