2878881 has 4 divisors (see below), whose sum is σ = 3838512. Its totient is φ = 1919252.

The previous prime is 2878879. The next prime is 2878903. The reversal of 2878881 is 1888782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2878881 - 2¹ = 2878879 is a prime.

It is a super-2 number, since 2×2878881² = 16575911624322, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2878181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479811 + ... + 479816.

It is an arithmetic number, because the mean of its divisors is an integer number (959628).

2^2878881 is an apocalyptic number.

It is an amenable number.

2878881 is a deficient number, since it is larger than the sum of its proper divisors (959631).

2878881 is an equidigital number, since it uses as much as digits as its factorization.

2878881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959630.

The product of its digits is 57344, while the sum is 42.

The square root of 2878881 is about 1696.7265542803. The cubic root of 2878881 is about 142.2573031092.

Subtracting from 2878881 its reverse (1888782), we obtain a palindrome (990099).

The spelling of 2878881 in words is "two million, eight hundred seventy-eight thousand, eight hundred eighty-one".