28893284 has 24 divisors (see below), whose sum is σ = 58322880. Its totient is φ = 12267936.

The previous prime is 28893283. The next prime is 28893287. The reversal of 28893284 is 48239882.

It is not an unprimeable number, because it can be changed into a prime (28893283) 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 7 ways as a sum of consecutive naturals, for example, 1682 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (2430120).

Almost surely, 2^28893284 is an apocalyptic number.

It is an amenable number.

28893284 is an abundant number, since it is smaller than the sum of its proper divisors (29429596).

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

28893284 is a wasteful number, since it uses less digits than its factorization.

28893284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9587 (or 9585 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 28893284 is about 5375.2473431462. The cubic root of 28893284 is about 306.8543626226.

The spelling of 28893284 in words is "twenty-eight million, eight hundred ninety-three thousand, two hundred eighty-four".