2720872 has 48 divisors (see below), whose sum is σ = 6484320. Its totient is φ = 1058400.

The previous prime is 2720849. The next prime is 2720881. The reversal of 2720872 is 2780272.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 2720872.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3997 + ... + 4627.

It is an arithmetic number, because the mean of its divisors is an integer number (135090).

2^2720872 is an apocalyptic number.

2720872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2720872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3242160).

2720872 is an abundant number, since it is smaller than the sum of its proper divisors (3763448).

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

2720872 is a wasteful number, since it uses less digits than its factorization.

2720872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2720872 is about 1649.5065928938. The cubic root of 2720872 is about 139.6055563835.

The spelling of 2720872 in words is "two million, seven hundred twenty thousand, eight hundred seventy-two".