816809296 has 10 divisors (see below), whose sum is σ = 1582568042. Its totient is φ = 408404640.

The previous prime is 816809291. The next prime is 816809303. The reversal of 816809296 is 692908618.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 798627600 + 18181696 = 28260^2 + 4264^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816809291) 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 as a sum of consecutive naturals, namely, 25525275 + ... + 25525306.

Almost surely, 2^816809296 is an apocalyptic number.

It is an amenable number.

816809296 is a deficient number, since it is larger than the sum of its proper divisors (765758746).

816809296 is a wasteful number, since it uses less digits than its factorization.

816809296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51050589 (or 51050583 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 816809296 is about 28579.8757170146. The cubic root of 816809296 is about 934.7745730862.

The spelling of 816809296 in words is "eight hundred sixteen million, eight hundred nine thousand, two hundred ninety-six".