1100456 has 32 divisors (see below), whose sum is σ = 2418240. Its totient is φ = 459648.

The previous prime is 1100447. The next prime is 1100467. The reversal of 1100456 is 6540011.

It is a happy number.

It is a super-2 number, since 2×1100456² = 2422006815872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2180 + ... + 2636.

It is an arithmetic number, because the mean of its divisors is an integer number (75570).

2^1100456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209120).

1100456 is an abundant number, since it is smaller than the sum of its proper divisors (1317784).

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

1100456 is a wasteful number, since it uses less digits than its factorization.

1100456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1100456 is about 1049.0262151157. The cubic root of 1100456 is about 103.2422738094.

Adding to 1100456 its reverse (6540011), we get a palindrome (7640467).

The spelling of 1100456 in words is "one million, one hundred thousand, four hundred fifty-six".