1081100 has 36 divisors (see below), whose sum is σ = 2473800. Its totient is φ = 408960.

The previous prime is 1081099. The next prime is 1081121. The reversal of 1081100 is 11801.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1616 + ... + 2184.

2^1081100 is an apocalyptic number.

1081100 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 1081100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236900).

1081100 is an abundant number, since it is smaller than the sum of its proper divisors (1392700).

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

1081100 is a wasteful number, since it uses less digits than its factorization.

1081100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1081100 is about 1039.7595875971. The cubic root of 1081100 is about 102.6333778247.

Adding to 1081100 its reverse (11801), we get a palindrome (1092901).

The spelling of 1081100 in words is "one million, eighty-one thousand, one hundred".