1115816 has 16 divisors (see below), whose sum is σ = 2253300. Its totient is φ = 514944.

The previous prime is 1115789. The next prime is 1115831. The reversal of 1115816 is 6185111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1110916 + 4900 = 1054^2 + 70^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1115791 and 1115800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5261 + ... + 5468.

2^1115816 is an apocalyptic number.

It is an amenable number.

1115816 is an abundant number, since it is smaller than the sum of its proper divisors (1137484).

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

1115816 is a wasteful number, since it uses less digits than its factorization.

1115816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10748 (or 10744 counting only the distinct ones).

The product of its digits is 240, while the sum is 23.

The square root of 1115816 is about 1056.3219206284. The cubic root of 1115816 is about 103.7204028412.

The spelling of 1115816 in words is "one million, one hundred fifteen thousand, eight hundred sixteen".