2278744 has 16 divisors (see below), whose sum is σ = 4601520. Its totient is φ = 1051680.

The previous prime is 2278729. The next prime is 2278747. The reversal of 2278744 is 4478722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278747) 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, 10852 + ... + 11059.

It is an arithmetic number, because the mean of its divisors is an integer number (287595).

2^2278744 is an apocalyptic number.

It is an amenable number.

2278744 is an abundant number, since it is smaller than the sum of its proper divisors (2322776).

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

2278744 is a wasteful number, since it uses less digits than its factorization.

2278744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21930 (or 21926 counting only the distinct ones).

The product of its digits is 25088, while the sum is 34.

The square root of 2278744 is about 1509.5509266004. The cubic root of 2278744 is about 131.5927146184.

The spelling of 2278744 in words is "two million, two hundred seventy-eight thousand, seven hundred forty-four".