1115900 has 18 divisors (see below), whose sum is σ = 2421720. Its totient is φ = 446320.

The previous prime is 1115899. The next prime is 1115911. The reversal of 1115900 is 95111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5480 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (134540).

2^1115900 is an apocalyptic number.

1115900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115900 is an abundant number, since it is smaller than the sum of its proper divisors (1305820).

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

1115900 is a wasteful number, since it uses less digits than its factorization.

1115900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11173 (or 11166 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 1115900 is about 1056.3616804864. The cubic root of 1115900 is about 103.7230055090.

The spelling of 1115900 in words is "one million, one hundred fifteen thousand, nine hundred".