28106384 has 40 divisors (see below), whose sum is σ = 56445048. Its totient is φ = 13547520.

The previous prime is 28106371. The next prime is 28106399. The reversal of 28106384 is 48360182.

It can be written as a sum of positive squares in 4 ways, for example, as 21715600 + 6390784 = 4660^2 + 2528^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28106384.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 116504 + ... + 116744.

Almost surely, 2^28106384 is an apocalyptic number.

It is an amenable number.

28106384 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

28106384 is a wasteful number, since it uses less digits than its factorization.

28106384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28106384 is about 5301.5454350595. The cubic root of 28106384 is about 304.0429879190.

The spelling of 28106384 in words is "twenty-eight million, one hundred six thousand, three hundred eighty-four".