6209728 has 56 divisors (see below), whose sum is σ = 14337792. Its totient is φ = 2613504.

The previous prime is 6209719. The next prime is 6209729. The reversal of 6209728 is 8279026.

It is a tau number, because it is divible by the number of its divisors (56).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6209693 and 6209702.

It is not an unprimeable number, because it can be changed into a prime (6209729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37101 + ... + 37267.

It is an arithmetic number, because the mean of its divisors is an integer number (256032).

Almost surely, 2^6209728 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 6209728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7168896).

6209728 is an abundant number, since it is smaller than the sum of its proper divisors (8128064).

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

6209728 is a wasteful number, since it uses less digits than its factorization.

6209728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 6209728 is about 2491.9325833577. The cubic root of 6209728 is about 183.8050866045.

The spelling of 6209728 in words is "six million, two hundred nine thousand, seven hundred twenty-eight".