816779832 has 32 divisors (see below), whose sum is σ = 2227582080. Its totient is φ = 247508960.

The previous prime is 816779827. The next prime is 816779839. The reversal of 816779832 is 238977618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816779839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546668 + ... + 1547195.

It is an arithmetic number, because the mean of its divisors is an integer number (69611940).

Almost surely, 2^816779832 is an apocalyptic number.

It is an amenable number.

816779832 is an abundant number, since it is smaller than the sum of its proper divisors (1410802248).

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

816779832 is a wasteful number, since it uses less digits than its factorization.

816779832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093883 (or 3093879 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 816779832 is about 28579.3602447641. The cubic root of 816779832 is about 934.7633332006.

The spelling of 816779832 in words is "eight hundred sixteen million, seven hundred seventy-nine thousand, eight hundred thirty-two".