28448284 has 12 divisors (see below), whose sum is σ = 50942584. Its totient is φ = 13893264.

The previous prime is 28448281. The next prime is 28448311. The reversal of 28448284 is 48284482.

28448284 = T₄₈₇ + T₄₈₈ + ... + T₆₅₈.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82527 + ... + 82870.

Almost surely, 2^28448284 is an apocalyptic number.

It is an amenable number.

28448284 is a deficient number, since it is larger than the sum of its proper divisors (22494300).

28448284 is a wasteful number, since it uses less digits than its factorization.

28448284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165444 (or 165442 counting only the distinct ones).

The product of its digits is 131072, while the sum is 40.

The square root of 28448284 is about 5333.6932795203. The cubic root of 28448284 is about 305.2708657106.

The spelling of 28448284 in words is "twenty-eight million, four hundred forty-eight thousand, two hundred eighty-four".