2778496 has 48 divisors (see below), whose sum is σ = 6453540. Its totient is φ = 1188096.

The previous prime is 2778481. The next prime is 2778521. The reversal of 2778496 is 6948772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6051 + ... + 6493.

2^2778496 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 2778496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3226770).

2778496 is an abundant number, since it is smaller than the sum of its proper divisors (3675044).

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

2778496 is an equidigital number, since it uses as much as digits as its factorization.

2778496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 452 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 2778496 is about 1666.8821194074. The cubic root of 2778496 is about 140.5842252812.

The spelling of 2778496 in words is "two million, seven hundred seventy-eight thousand, four hundred ninety-six".