2720216 has 8 divisors (see below), whose sum is σ = 5100420. Its totient is φ = 1360104.

The previous prime is 2720197. The next prime is 2720239. The reversal of 2720216 is 6120272.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170006 + ... + 170021.

2^2720216 is an apocalyptic number.

It is an amenable number.

2720216 is a deficient number, since it is larger than the sum of its proper divisors (2380204).

2720216 is a wasteful number, since it uses less digits than its factorization.

2720216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340033 (or 340029 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2720216 is about 1649.3077335658. The cubic root of 2720216 is about 139.5943358867.

Adding to 2720216 its reverse (6120272), we get a palindrome (8840488).

The spelling of 2720216 in words is "two million, seven hundred twenty thousand, two hundred sixteen".