816569352 has 48 divisors (see below), whose sum is σ = 2258605440. Its totient is φ = 266397408.

The previous prime is 816569339. The next prime is 816569353. The reversal of 816569352 is 253965618.

816569352 is a `hidden beast` number, since 81 + 6 + 569 + 3 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 816569298 and 816569307.

It is not an unprimeable number, because it can be changed into a prime (816569353) 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 11 ways as a sum of consecutive naturals, for example, 117268 + ... + 124035.

It is an arithmetic number, because the mean of its divisors is an integer number (47054280).

Almost surely, 2^816569352 is an apocalyptic number.

It is an amenable number.

816569352 is an abundant number, since it is smaller than the sum of its proper divisors (1442036088).

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

816569352 is a wasteful number, since it uses less digits than its factorization.

816569352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241362 (or 241355 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 816569352 is about 28575.6776297606. The cubic root of 816569352 is about 934.6830317201.

The spelling of 816569352 in words is "eight hundred sixteen million, five hundred sixty-nine thousand, three hundred fifty-two".