609728812 has 48 divisors (see below), whose sum is σ = 1338124032. Its totient is φ = 236162880.

The previous prime is 609728807. The next prime is 609728813. The reversal of 609728812 is 218827906.

609728812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (609728813) 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, 47563 + ... + 59005.

It is an arithmetic number, because the mean of its divisors is an integer number (27877584).

Almost surely, 2^609728812 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 609728812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669062016).

609728812 is an abundant number, since it is smaller than the sum of its proper divisors (728395220).

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

609728812 is a wasteful number, since it uses less digits than its factorization.

609728812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638 (or 11636 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 609728812 is about 24692.6874195580. The cubic root of 609728812 is about 847.9669112371.

The spelling of 609728812 in words is "six hundred nine million, seven hundred twenty-eight thousand, eight hundred twelve".