28630284 has 12 divisors (see below), whose sum is σ = 66804024. Its totient is φ = 9543424.

The previous prime is 28630271. The next prime is 28630297. The reversal of 28630284 is 48203682.

It is an interprime number because it is at equal distance from previous prime (28630271) and next prime (28630297).

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1192917 + ... + 1192940.

It is an arithmetic number, because the mean of its divisors is an integer number (5567002).

Almost surely, 2^28630284 is an apocalyptic number.

It is an amenable number.

28630284 is an abundant number, since it is smaller than the sum of its proper divisors (38173740).

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

28630284 is a wasteful number, since it uses less digits than its factorization.

28630284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385864 (or 2385862 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 28630284 is about 5350.7274271822. The cubic root of 28630284 is about 305.9204799991.

The spelling of 28630284 in words is "twenty-eight million, six hundred thirty thousand, two hundred eighty-four".