816788632 has 16 divisors (see below), whose sum is σ = 1670704200. Its totient is φ = 371267520.

The previous prime is 816788629. The next prime is 816788669. The reversal of 816788632 is 236887618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640757 + ... + 4640932.

Almost surely, 2^816788632 is an apocalyptic number.

It is an amenable number.

816788632 is an abundant number, since it is smaller than the sum of its proper divisors (853915568).

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

816788632 is a wasteful number, since it uses less digits than its factorization.

816788632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281706 (or 9281702 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 816788632 is about 28579.5142016095. The cubic root of 816788632 is about 934.7666902406.

The spelling of 816788632 in words is "eight hundred sixteen million, seven hundred eighty-eight thousand, six hundred thirty-two".