2728613 has 4 divisors (see below), whose sum is σ = 2745120. Its totient is φ = 2712108.

The previous prime is 2728603. The next prime is 2728631. The reversal of 2728613 is 3168272.

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 2728613 - 2⁶ = 2728549 is a prime.

It is a d-powerful number, because it can be written as 2⁶ + 7² + 2²⁰ + 8² + 6⁸ + 1 + 3⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728603) 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, 8003 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (686280).

2^2728613 is an apocalyptic number.

It is an amenable number.

2728613 is a deficient number, since it is larger than the sum of its proper divisors (16507).

2728613 is a wasteful number, since it uses less digits than its factorization.

2728613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16506.

The product of its digits is 4032, while the sum is 29.

The square root of 2728613 is about 1651.8513855671. The cubic root of 2728613 is about 139.7378256660.

The spelling of 2728613 in words is "two million, seven hundred twenty-eight thousand, six hundred thirteen".