2781896 has 32 divisors (see below), whose sum is σ = 5866560. Its totient is φ = 1227072.

The previous prime is 2781887. The next prime is 2781901. The reversal of 2781896 is 6981872.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (183330).

2^2781896 is an apocalyptic number.

2781896 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2781896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2933280).

2781896 is an abundant number, since it is smaller than the sum of its proper divisors (3084664).

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

2781896 is a wasteful number, since it uses less digits than its factorization.

2781896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1201 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 2781896 is about 1667.9016757591. The cubic root of 2781896 is about 140.6415454442.

The spelling of 2781896 in words is "two million, seven hundred eighty-one thousand, eight hundred ninety-six".