816012 has 36 divisors (see below), whose sum is σ = 2173080. Its totient is φ = 257472.

The previous prime is 815989. The next prime is 816019. The reversal of 816012 is 210618.

816012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (816019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88 + ... + 1280.

2⁸¹⁶⁰¹² 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 816012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086540).

816012 is an abundant number, since it is smaller than the sum of its proper divisors (1357068).

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

816012 is a wasteful number, since it uses less digits than its factorization.

816012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 816012 is about 903.3338253381. Note that the first 3 decimals coincide. The cubic root of 816012 is about 93.4470326363.

The spelling of 816012 in words is "eight hundred sixteen thousand, twelve".