849963728 has 30 divisors (see below), whose sum is σ = 1655660214. Its totient is φ = 422708352.

The previous prime is 849963721. The next prime is 849963731. The reversal of 849963728 is 827369948.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 226562704 + 623401024 = 15052^2 + 24968^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849963721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 838550 + ... + 839562.

Almost surely, 2^849963728 is an apocalyptic number.

It is an amenable number.

849963728 is a deficient number, since it is larger than the sum of its proper divisors (805696486).

849963728 is a wasteful number, since it uses less digits than its factorization.

849963728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1244 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 56.

The square root of 849963728 is about 29154.1374079221. The cubic root of 849963728 is about 947.2547627537.

It can be divided in two parts, 8499 and 63728, that added together give a palindrome (72227).

The spelling of 849963728 in words is "eight hundred forty-nine million, nine hundred sixty-three thousand, seven hundred twenty-eight".