1145816 has 48 divisors (see below), whose sum is σ = 2599200. Its totient is φ = 471744.

The previous prime is 1145803. The next prime is 1145831. The reversal of 1145816 is 6185411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14465 + ... + 14543.

It is an arithmetic number, because the mean of its divisors is an integer number (54150).

2^1145816 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 1145816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299600).

1145816 is an abundant number, since it is smaller than the sum of its proper divisors (1453384).

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

1145816 is a wasteful number, since it uses less digits than its factorization.

1145816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 125 counting only the distinct ones).

The product of its digits is 960, while the sum is 26.

The square root of 1145816 is about 1070.4279518025. The cubic root of 1145816 is about 104.6417419836.

The spelling of 1145816 in words is "one million, one hundred forty-five thousand, eight hundred sixteen".