2720826 has 12 divisors (see below), whose sum is σ = 5895162. Its totient is φ = 906936.

The previous prime is 2720821. The next prime is 2720843. The reversal of 2720826 is 6280272.

It can be written as a sum of positive squares in only one way, i.e., 2556801 + 164025 = 1599^2 + 405^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2720826.

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 5 ways as a sum of consecutive naturals, for example, 75561 + ... + 75596.

2^2720826 is an apocalyptic number.

2720826 is an abundant number, since it is smaller than the sum of its proper divisors (3174336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2720826 is a wasteful number, since it uses less digits than its factorization.

2720826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151165 (or 151162 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2720826 is about 1649.4926492713. The cubic root of 2720826 is about 139.6047696391.

The spelling of 2720826 in words is "two million, seven hundred twenty thousand, eight hundred twenty-six".