28281602 has 8 divisors (see below), whose sum is σ = 42445200. Its totient is φ = 14133204.

The previous prime is 28281601. The next prime is 28281623. The reversal of 28281602 is 20618282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28281601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4349 + ... + 8687.

It is an arithmetic number, because the mean of its divisors is an integer number (5305650).

Almost surely, 2^28281602 is an apocalyptic number.

28281602 is a deficient number, since it is larger than the sum of its proper divisors (14163598).

28281602 is a wasteful number, since it uses less digits than its factorization.

28281602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28281602 is about 5318.0449415175. The cubic root of 28281602 is about 304.6734909553.

Adding to 28281602 its reverse (20618282), we get a palindrome (48899884).

The spelling of 28281602 in words is "twenty-eight million, two hundred eighty-one thousand, six hundred two".