816344012 has 24 divisors (see below), whose sum is σ = 1650151440. Its totient is φ = 349237760.

The previous prime is 816344003. The next prime is 816344017. The reversal of 816344012 is 210443618.

It is a super-2 number, since 2×816344012² = 1332835091856512288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (816344017) 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, 544937 + ... + 546432.

It is an arithmetic number, because the mean of its divisors is an integer number (68756310).

Almost surely, 2^816344012 is an apocalyptic number.

It is an amenable number.

816344012 is an abundant number, since it is smaller than the sum of its proper divisors (833807428).

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

816344012 is a wasteful number, since it uses less digits than its factorization.

816344012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091401 (or 1091399 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 816344012 is about 28571.7344940765. The cubic root of 816344012 is about 934.5970456161.

The spelling of 816344012 in words is "eight hundred sixteen million, three hundred forty-four thousand, twelve".