2873881 has 4 divisors (see below), whose sum is σ = 2877732. Its totient is φ = 2870032.

The previous prime is 2873879. The next prime is 2873887. The reversal of 2873881 is 1883782.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 38025 + 2835856 = 195^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 2873881 - 2¹ = 2873879 is a prime.

It is a super-2 number, since 2×2873881² = 16518384004322, which contains 22 as substring.

It is a Duffinian number.

2873881 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2873881.

It is not an unprimeable number, because it can be changed into a prime (2873887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406 + ... + 2431.

It is an arithmetic number, because the mean of its divisors is an integer number (719433).

2^2873881 is an apocalyptic number.

It is an amenable number.

2873881 is a deficient number, since it is larger than the sum of its proper divisors (3851).

2873881 is a wasteful number, since it uses less digits than its factorization.

2873881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850.

The product of its digits is 21504, while the sum is 37.

The square root of 2873881 is about 1695.2524885692. The cubic root of 2873881 is about 142.1748985572.

Subtracting from 2873881 its reverse (1883782), we obtain a palindrome (990099).

The spelling of 2873881 in words is "two million, eight hundred seventy-three thousand, eight hundred eighty-one".