2728349291933 has 8 divisors (see below), whose sum is σ = 2729897509752. Its totient is φ = 2726801502976.

The previous prime is 2728349291917. The next prime is 2728349291951. The reversal of 2728349291933 is 3391929438272.

It can be written as a sum of positive squares in 4 ways, for example, as 82137840409 + 2646211451524 = 286597^2 + 1626718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2728349291933 - 2⁴ = 2728349291917 is a prime.

It is a super-4 number, since 4×2728349291933⁴ (a number of 51 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728349291903) 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, 13075841 + ... + 13282857.

It is an arithmetic number, because the mean of its divisors is an integer number (341237188719).

Almost surely, 2^{2728349291933} is an apocalyptic number.

It is an amenable number.

2728349291933 is a deficient number, since it is larger than the sum of its proper divisors (1548217819).

2728349291933 is a wasteful number, since it uses less digits than its factorization.

2728349291933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214431.

The product of its digits is 35271936, while the sum is 62.

The spelling of 2728349291933 in words is "two trillion, seven hundred twenty-eight billion, three hundred forty-nine million, two hundred ninety-one thousand, nine hundred thirty-three".