609487728 has 40 divisors (see below), whose sum is σ = 1608016128. Its totient is φ = 198839232.

The previous prime is 609487721. The next prime is 609487733. The reversal of 609487728 is 827784906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609487721) 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 7 ways as a sum of consecutive naturals, for example, 132826 + ... + 137337.

Almost surely, 2^609487728 is an apocalyptic number.

It is an amenable number.

609487728 is an abundant number, since it is smaller than the sum of its proper divisors (998528400).

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

609487728 is a wasteful number, since it uses less digits than its factorization.

609487728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270221 (or 270215 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 609487728 is about 24687.8052487458. The cubic root of 609487728 is about 847.8551357502.

The spelling of 609487728 in words is "six hundred nine million, four hundred eighty-seven thousand, seven hundred twenty-eight".