2720828 has 12 divisors (see below), whose sum is σ = 5194392. Its totient is φ = 1236720.

The previous prime is 2720821. The next prime is 2720843. The reversal of 2720828 is 8280272.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2720828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720821) 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, 30875 + ... + 30962.

It is an arithmetic number, because the mean of its divisors is an integer number (432866).

2^2720828 is an apocalyptic number.

It is an amenable number.

2720828 is a deficient number, since it is larger than the sum of its proper divisors (2473564).

2720828 is a wasteful number, since it uses less digits than its factorization.

2720828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61852 (or 61850 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2720828 is about 1649.4932555182. The cubic root of 2720828 is about 139.6048038456.

The spelling of 2720828 in words is "two million, seven hundred twenty thousand, eight hundred twenty-eight".