810849572 has 12 divisors (see below), whose sum is σ = 1528139676. Its totient is φ = 374238240.

The previous prime is 810849569. The next prime is 810849577. The reversal of 810849572 is 275948018.

It can be written as a sum of positive squares in 2 ways, for example, as 402162916 + 408686656 = 20054^2 + 20216^2 .

It is not an unprimeable number, because it can be changed into a prime (810849577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7796579 + ... + 7796682.

It is an arithmetic number, because the mean of its divisors is an integer number (127344973).

Almost surely, 2^810849572 is an apocalyptic number.

It is an amenable number.

810849572 is a deficient number, since it is larger than the sum of its proper divisors (717290104).

810849572 is a wasteful number, since it uses less digits than its factorization.

810849572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15593278 (or 15593276 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 810849572 is about 28475.4204885547. The cubic root of 810849572 is about 932.4955413348.

The spelling of 810849572 in words is "eight hundred ten million, eight hundred forty-nine thousand, five hundred seventy-two".