1100856 has 16 divisors (see below), whose sum is σ = 2752200. Its totient is φ = 366944.

The previous prime is 1100851. The next prime is 1100857. The reversal of 1100856 is 6580011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100851) 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, 22911 + ... + 22958.

2^1100856 is an apocalyptic number.

It is an amenable number.

1100856 is an abundant number, since it is smaller than the sum of its proper divisors (1651344).

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

1100856 is a wasteful number, since it uses less digits than its factorization.

1100856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45878 (or 45874 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1100856 is about 1049.2168507987. The cubic root of 1100856 is about 103.2547813235.

Adding to 1100856 its reverse (6580011), we get a palindrome (7680867).

The spelling of 1100856 in words is "one million, one hundred thousand, eight hundred fifty-six".