2728172 has 12 divisors (see below), whose sum is σ = 5025720. Its totient is φ = 1292256.

The previous prime is 2728171. The next prime is 2728199. The reversal of 2728172 is 2718272.

It is a super-3 number, since 3×2728172³ = 60916717973593633344, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2728171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17873 + ... + 18024.

It is an arithmetic number, because the mean of its divisors is an integer number (418810).

2^2728172 is an apocalyptic number.

It is an amenable number.

2728172 is a deficient number, since it is larger than the sum of its proper divisors (2297548).

2728172 is a wasteful number, since it uses less digits than its factorization.

2728172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35920 (or 35918 counting only the distinct ones).

The product of its digits is 3136, while the sum is 29.

The square root of 2728172 is about 1651.7178935884. The cubic root of 2728172 is about 139.7302970912.

The spelling of 2728172 in words is "two million, seven hundred twenty-eight thousand, one hundred seventy-two".