2778412 has 48 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 1032192.

The previous prime is 2778401. The next prime is 2778421. The reversal of 2778412 is 2148772.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5964 + ... + 6412.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2^2778412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2778412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175200).

2778412 is an abundant number, since it is smaller than the sum of its proper divisors (3571988).

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

2778412 is a wasteful number, since it uses less digits than its factorization.

2778412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 488 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2778412 is about 1666.8569224742. The cubic root of 2778412 is about 140.5828085443.

The spelling of 2778412 in words is "two million, seven hundred seventy-eight thousand, four hundred twelve".