1111800 has 96 divisors (see below), whose sum is σ = 3682800. Its totient is φ = 276480.

The previous prime is 1111793. The next prime is 1111801. The reversal of 1111800 is 81111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10146 + ... + 10254.

2^1111800 is an apocalyptic number.

1111800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841400).

1111800 is an abundant number, since it is smaller than the sum of its proper divisors (2571000).

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

1111800 is a wasteful number, since it uses less digits than its factorization.

1111800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1111800 is about 1054.4192714476. The cubic root of 1111800 is about 103.5958178224.

Adding to 1111800 its reverse (81111), we get a palindrome (1192911).

It can be divided in two parts, 11 and 11800, that added together give a palindrome (11811).

The spelling of 1111800 in words is "one million, one hundred eleven thousand, eight hundred".