2720864 has 12 divisors (see below), whose sum is σ = 5356764. Its totient is φ = 1360416.

The previous prime is 2720849. The next prime is 2720881. The reversal of 2720864 is 4680272.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42482 + ... + 42545.

It is an arithmetic number, because the mean of its divisors is an integer number (446397).

2^2720864 is an apocalyptic number.

It is an amenable number.

2720864 is a deficient number, since it is larger than the sum of its proper divisors (2635900).

2720864 is an equidigital number, since it uses as much as digits as its factorization.

2720864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85037 (or 85029 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2720864 is about 1649.5041679244. The cubic root of 2720864 is about 139.6054195590.

It can be divided in two parts, 27208 and 64, that added together give a palindrome (27272).

The spelling of 2720864 in words is "two million, seven hundred twenty thousand, eight hundred sixty-four".