2872872 has 24 divisors (see below), whose sum is σ = 7780890. Its totient is φ = 957600.

The previous prime is 2872853. The next prime is 2872889. The reversal of 2872872 is 2782782.

2872872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2842596 + 30276 = 1686^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19879 + ... + 20022.

2^2872872 is an apocalyptic number.

It is an amenable number.

2872872 is an abundant number, since it is smaller than the sum of its proper divisors (4908018).

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

2872872 is a wasteful number, since it uses less digits than its factorization.

2872872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39913 (or 39906 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 2872872 is about 1694.9548666557. The cubic root of 2872872 is about 142.1582577308.

It can be divided in two parts, 28 and 72872, that added together give a square (72900 = 270²).

The spelling of 2872872 in words is "two million, eight hundred seventy-two thousand, eight hundred seventy-two".