2807889 has 8 divisors (see below), whose sum is σ = 4278720. Its totient is φ = 1604496.

The previous prime is 2807881. The next prime is 2807899. The reversal of 2807889 is 9887082.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2807889 - 2³ = 2807881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2807889.

It is not an unprimeable number, because it can be changed into a prime (2807881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66834 + ... + 66875.

It is an arithmetic number, because the mean of its divisors is an integer number (534840).

2^2807889 is an apocalyptic number.

It is an amenable number.

2807889 is a deficient number, since it is larger than the sum of its proper divisors (1470831).

2807889 is a wasteful number, since it uses less digits than its factorization.

2807889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133719.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 2807889 is about 1675.6756846120. The cubic root of 2807889 is about 141.0782222776.

It can be divided in two parts, 28078 and 89, that multiplied together give a palindrome (2498942).

The spelling of 2807889 in words is "two million, eight hundred seven thousand, eight hundred eighty-nine".