728550936 has 64 divisors (see below), whose sum is σ = 2048786400. Its totient is φ = 242844480.

The previous prime is 728550931. The next prime is 728550937. The reversal of 728550936 is 639055827.

It is a happy number.

728550936 is a `hidden beast` number, since 7 + 2 + 8 + 550 + 93 + 6 = 666.

728550936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 728550891 and 728550900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728550931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3325 + ... + 38316.

Almost surely, 2^728550936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728550936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024393200).

728550936 is an abundant number, since it is smaller than the sum of its proper divisors (1320235464).

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

728550936 is an equidigital number, since it uses as much as digits as its factorization.

728550936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41668 (or 41646 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 728550936 is about 26991.6827189414. The cubic root of 728550936 is about 899.8151620414.

The spelling of 728550936 in words is "seven hundred twenty-eight million, five hundred fifty thousand, nine hundred thirty-six".