1125816 has 32 divisors (see below), whose sum is σ = 2864400. Its totient is φ = 368640.

The previous prime is 1125811. The next prime is 1125823. The reversal of 1125816 is 6185211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080 + ... + 1848.

2^1125816 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 1125816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432200).

1125816 is an abundant number, since it is smaller than the sum of its proper divisors (1738584).

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

1125816 is a wasteful number, since it uses less digits than its factorization.

1125816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 835 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

The square root of 1125816 is about 1061.0447681413. The cubic root of 1125816 is about 104.0293309775.

The spelling of 1125816 in words is "one million, one hundred twenty-five thousand, eight hundred sixteen".