1118900 has 36 divisors (see below), whose sum is σ = 2479008. Its totient is φ = 438240.

The previous prime is 1118893. The next prime is 1118911. The reversal of 1118900 is 98111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent 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, 6617 + ... + 6783.

2^1118900 is an apocalyptic number.

1118900 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 1118900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239504).

1118900 is an abundant number, since it is smaller than the sum of its proper divisors (1360108).

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

1118900 is a wasteful number, since it uses less digits than its factorization.

1118900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1118900 is about 1057.7806956076. The cubic root of 1118900 is about 103.8158724272.

1118900 divided by its sum of digits (20) gives a triangular number (55945 = T₃₃₄).

The spelling of 1118900 in words is "one million, one hundred eighteen thousand, nine hundred".