28003484 has 12 divisors (see below), whose sum is σ = 49164864. Its totient is φ = 13956384.

The previous prime is 28003483. The next prime is 28003499. The reversal of 28003484 is 48430082.

It is a super-2 number, since 2×28003484² = 1568390232276512, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) 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 (28003483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9932 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (4097072).

Almost surely, 2^28003484 is an apocalyptic number.

It is an amenable number.

28003484 is a deficient number, since it is larger than the sum of its proper divisors (21161380).

28003484 is a wasteful number, since it uses less digits than its factorization.

28003484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22684 (or 22682 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28003484 is about 5291.8318189451. The cubic root of 28003484 is about 303.6714912795.

The spelling of 28003484 in words is "twenty-eight million, three thousand, four hundred eighty-four".