1117816 has 16 divisors (see below), whose sum is σ = 2395440. Its totient is φ = 479040.

The previous prime is 1117813. The next prime is 1117817. The reversal of 1117816 is 6187111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9925 + ... + 10036.

It is an arithmetic number, because the mean of its divisors is an integer number (149715).

2^1117816 is an apocalyptic number.

It is an amenable number.

1117816 is an abundant number, since it is smaller than the sum of its proper divisors (1277624).

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

1117816 is a wasteful number, since it uses less digits than its factorization.

1117816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19974 (or 19970 counting only the distinct ones).

The product of its digits is 336, while the sum is 25.

The square root of 1117816 is about 1057.2681779000. The cubic root of 1117816 is about 103.7823356895.

The spelling of 1117816 in words is "one million, one hundred seventeen thousand, eight hundred sixteen".