2781882 has 24 divisors (see below), whose sum is σ = 6191796. Its totient is φ = 902016.

The previous prime is 2781853. The next prime is 2781887. The reversal of 2781882 is 2881872.

It can be written as a sum of positive squares in 2 ways, for example, as 2187441 + 594441 = 1479^2 + 771^2 .

It is not an unprimeable number, because it can be changed into a prime (2781887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1423 + ... + 2754.

2^2781882 is an apocalyptic number.

2781882 is an abundant number, since it is smaller than the sum of its proper divisors (3409914).

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

2781882 is a wasteful number, since it uses less digits than its factorization.

2781882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4219 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2781882 is about 1667.8974788637. The cubic root of 2781882 is about 140.6413095158.

It can be divided in two parts, 2781 and 882, that added together give a palindrome (3663).

The spelling of 2781882 in words is "two million, seven hundred eighty-one thousand, eight hundred eighty-two".