28332516 has 12 divisors (see below), whose sum is σ = 66109232. Its totient is φ = 9444168.

The previous prime is 28332511. The next prime is 28332529. The reversal of 28332516 is 61523382.

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

It is not an unprimeable number, because it can be changed into a prime (28332511) 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 3 ways as a sum of consecutive naturals, for example, 1180510 + ... + 1180533.

Almost surely, 2^28332516 is an apocalyptic number.

It is an amenable number.

28332516 is an abundant number, since it is smaller than the sum of its proper divisors (37776716).

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

28332516 is a wasteful number, since it uses less digits than its factorization.

28332516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361050 (or 2361048 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 28332516 is about 5322.8296985720. The cubic root of 28332516 is about 304.8562110010.

Adding to 28332516 its reverse (61523382), we get a palindrome (89855898).

The spelling of 28332516 in words is "twenty-eight million, three hundred thirty-two thousand, five hundred sixteen".