609100728 has 32 divisors (see below), whose sum is σ = 1524019200. Its totient is φ = 202864608.

The previous prime is 609100699. The next prime is 609100747. The reversal of 609100728 is 827001906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20775 + ... + 40617.

It is an arithmetic number, because the mean of its divisors is an integer number (47625600).

Almost surely, 2^609100728 is an apocalyptic number.

It is an amenable number.

609100728 is an abundant number, since it is smaller than the sum of its proper divisors (914918472).

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

609100728 is a wasteful number, since it uses less digits than its factorization.

609100728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21131 (or 21127 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 609100728 is about 24679.9661263949. The cubic root of 609100728 is about 847.6756465417.

The spelling of 609100728 in words is "six hundred nine million, one hundred thousand, seven hundred twenty-eight".