2277728 has 48 divisors (see below), whose sum is σ = 4898880. Its totient is φ = 1038336.

The previous prime is 2277727. The next prime is 2277731. The reversal of 2277728 is 8277722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2277727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28793 + ... + 28871.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2^2277728 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 2277728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449440).

2277728 is an abundant number, since it is smaller than the sum of its proper divisors (2621152).

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

2277728 is a wasteful number, since it uses less digits than its factorization.

2277728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 151 counting only the distinct ones).

The product of its digits is 21952, while the sum is 35.

The square root of 2277728 is about 1509.2143651582. The cubic root of 2277728 is about 131.5731544172.

The spelling of 2277728 in words is "two million, two hundred seventy-seven thousand, seven hundred twenty-eight".