1115808 has 48 divisors (see below), whose sum is σ = 2993760. Its totient is φ = 363776.

The previous prime is 1115789. The next prime is 1115831. The reversal of 1115808 is 8085111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5566 + ... + 5762.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2^1115808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496880).

1115808 is an abundant number, since it is smaller than the sum of its proper divisors (1877952).

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

1115808 is a wasteful number, since it uses less digits than its factorization.

1115808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 1115808 is about 1056.3181338972. The cubic root of 1115808 is about 103.7201549613.

The spelling of 1115808 in words is "one million, one hundred fifteen thousand, eight hundred eight".