28216482 has 48 divisors (see below), whose sum is σ = 68104512. Its totient is φ = 7633440.

The previous prime is 28216477. The next prime is 28216493. The reversal of 28216482 is 28461282.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14232 + ... + 16092.

It is an arithmetic number, because the mean of its divisors is an integer number (1418844).

Almost surely, 2^28216482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28216482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34052256).

28216482 is an abundant number, since it is smaller than the sum of its proper divisors (39888030).

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

28216482 is a wasteful number, since it uses less digits than its factorization.

28216482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1892 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 28216482 is about 5311.9188623321. The cubic root of 28216482 is about 304.4394685559.

The spelling of 28216482 in words is "twenty-eight million, two hundred sixteen thousand, four hundred eighty-two".