729622856 has 16 divisors (see below), whose sum is σ = 1371017340. Its totient is φ = 364018240.

The previous prime is 729622853. The next prime is 729622937. The reversal of 729622856 is 658226927.

729622856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 695165956 + 34456900 = 26366^2 + 5870^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 729622856.

It is not an unprimeable number, because it can be changed into a prime (729622853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95231 + ... + 102606.

Almost surely, 2^729622856 is an apocalyptic number.

It is an amenable number.

729622856 is a deficient number, since it is larger than the sum of its proper divisors (641394484).

729622856 is a wasteful number, since it uses less digits than its factorization.

729622856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198304 (or 198300 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 729622856 is about 27011.5319076871. The cubic root of 729622856 is about 900.2562463766.

The spelling of 729622856 in words is "seven hundred twenty-nine million, six hundred twenty-two thousand, eight hundred fifty-six".