2871920 has 20 divisors (see below), whose sum is σ = 6677400. Its totient is φ = 1148736.

The previous prime is 2871919. The next prime is 2871937. The reversal of 2871920 is 291782.

It is a happy number.

2871920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 17870 + ... + 18029.

It is an arithmetic number, because the mean of its divisors is an integer number (333870).

2^2871920 is an apocalyptic number.

2871920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2871920 is an abundant number, since it is smaller than the sum of its proper divisors (3805480).

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

2871920 is a wasteful number, since it uses less digits than its factorization.

2871920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35912 (or 35906 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2871920 is about 1694.6740099500. The cubic root of 2871920 is about 142.1425533981.

The spelling of 2871920 in words is "two million, eight hundred seventy-one thousand, nine hundred twenty".