2728197 has 12 divisors (see below), whose sum is σ = 3960684. Its totient is φ = 1809600.

The previous prime is 2728171. The next prime is 2728199. The reversal of 2728197 is 7918272.

It can be written as a sum of positive squares in 2 ways, for example, as 171396 + 2556801 = 414^2 + 1599^2 .

It is not a de Polignac number, because 2728197 - 2⁸ = 2727941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1447 + ... + 2747.

It is an arithmetic number, because the mean of its divisors is an integer number (330057).

2^2728197 is an apocalyptic number.

It is an amenable number.

2728197 is a deficient number, since it is larger than the sum of its proper divisors (1232487).

2728197 is a wasteful number, since it uses less digits than its factorization.

2728197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1537 counting only the distinct ones).

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

The square root of 2728197 is about 1651.7254614493. The cubic root of 2728197 is about 139.7307239028.

It can be divided in two parts, 27 and 28197, that added together give a square (28224 = 168²).

The spelling of 2728197 in words is "two million, seven hundred twenty-eight thousand, one hundred ninety-seven".