2728017009 has 8 divisors (see below), whose sum is σ = 4041506720. Its totient is φ = 1818677988.

The previous prime is 2728016999. The next prime is 2728017031. The reversal of 2728017009 is 9007108272.

It is a de Polignac number, because none of the positive numbers 2^k-2728017009 is a prime.

It is a super-3 number, since 3×2728017009³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2728017209) 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, 50518807 + ... + 50518860.

It is an arithmetic number, because the mean of its divisors is an integer number (505188340).

Almost surely, 2^2728017009 is an apocalyptic number.

It is an amenable number.

2728017009 is a deficient number, since it is larger than the sum of its proper divisors (1313489711).

2728017009 is a wasteful number, since it uses less digits than its factorization.

2728017009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101037676 (or 101037670 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 2728017009 is about 52230.4222556165. The cubic root of 2728017009 is about 1397.2765095442.

The spelling of 2728017009 in words is "two billion, seven hundred twenty-eight million, seventeen thousand, nine".