2278144 has 36 divisors (see below), whose sum is σ = 4966920. Its totient is φ = 1034240.

The previous prime is 2278141. The next prime is 2278181. The reversal of 2278144 is 4418722.

It is not an unprimeable number, because it can be changed into a prime (2278141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2412 + ... + 3220.

It is an arithmetic number, because the mean of its divisors is an integer number (137970).

2^2278144 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 2278144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2483460).

2278144 is an abundant number, since it is smaller than the sum of its proper divisors (2688776).

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

2278144 is an equidigital number, since it uses as much as digits as its factorization.

2278144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 822 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 2278144 is about 1509.3521789165. The cubic root of 2278144 is about 131.5811640216.

The spelling of 2278144 in words is "two million, two hundred seventy-eight thousand, one hundred forty-four".