2720871 has 12 divisors (see below), whose sum is σ = 4076072. Its totient is φ = 1813752.

The previous prime is 2720849. The next prime is 2720881. The reversal of 2720871 is 1780272.

It is not a de Polignac number, because 2720871 - 2⁶ = 2720807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 5356 + ... + 5841.

2^2720871 is an apocalyptic number.

2720871 is a deficient number, since it is larger than the sum of its proper divisors (1355201).

2720871 is an equidigital number, since it uses as much as digits as its factorization.

2720871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11212 (or 11200 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2720871 is about 1649.5062897728. The cubic root of 2720871 is about 139.6055392804.

The spelling of 2720871 in words is "two million, seven hundred twenty thousand, eight hundred seventy-one".