28272284 has 6 divisors (see below), whose sum is σ = 49476504. Its totient is φ = 14136140.

The previous prime is 28272259. The next prime is 28272287. The reversal of 28272284 is 48227282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28272287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3534032 + ... + 3534039.

It is an arithmetic number, because the mean of its divisors is an integer number (8246084).

Almost surely, 2^28272284 is an apocalyptic number.

It is an amenable number.

28272284 is a deficient number, since it is larger than the sum of its proper divisors (21204220).

28272284 is a wasteful number, since it uses less digits than its factorization.

28272284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068075 (or 7068073 counting only the distinct ones).

The product of its digits is 28672, while the sum is 35.

The square root of 28272284 is about 5317.1687955151. The cubic root of 28272284 is about 304.6400268039.

The spelling of 28272284 in words is "twenty-eight million, two hundred seventy-two thousand, two hundred eighty-four".