2285728 has 12 divisors (see below), whose sum is σ = 4500090. Its totient is φ = 1142848.

The previous prime is 2285711. The next prime is 2285741. The reversal of 2285728 is 8275822.

It can be written as a sum of positive squares in only one way, i.e., 2274064 + 11664 = 1508^2 + 108^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2285693 and 2285702.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 35683 + ... + 35746.

2^2285728 is an apocalyptic number.

It is an amenable number.

2285728 is a deficient number, since it is larger than the sum of its proper divisors (2214362).

2285728 is an equidigital number, since it uses as much as digits as its factorization.

2285728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71439 (or 71431 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 2285728 is about 1511.8624276038. The cubic root of 2285728 is about 131.7270146546.

The spelling of 2285728 in words is "two million, two hundred eighty-five thousand, seven hundred twenty-eight".