2728969 has 4 divisors (see below), whose sum is σ = 2738896. Its totient is φ = 2719044.

The previous prime is 2728967. The next prime is 2728981. The reversal of 2728969 is 9698272.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2728969 - 2¹ = 2728967 is a prime.

It is a super-2 number, since 2×2728969² = 14894543605922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2728967) 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, 4539 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (684724).

2^2728969 is an apocalyptic number.

It is an amenable number.

2728969 is a deficient number, since it is larger than the sum of its proper divisors (9927).

2728969 is an equidigital number, since it uses as much as digits as its factorization.

2728969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9926.

The product of its digits is 108864, while the sum is 43.

The square root of 2728969 is about 1651.9591399305. The cubic root of 2728969 is about 139.7439025633.

The spelling of 2728969 in words is "two million, seven hundred twenty-eight thousand, nine hundred sixty-nine".