28152516 has 24 divisors (see below), whose sum is σ = 75073600. Its totient is φ = 8043552.

The previous prime is 28152511. The next prime is 28152563. The reversal of 28152516 is 61525182.

It is not an unprimeable number, because it can be changed into a prime (28152511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167491 + ... + 167658.

Almost surely, 2^28152516 is an apocalyptic number.

It is an amenable number.

28152516 is an abundant number, since it is smaller than the sum of its proper divisors (46921084).

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

28152516 is a wasteful number, since it uses less digits than its factorization.

28152516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335163 (or 335161 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 28152516 is about 5305.8944580532. The cubic root of 28152516 is about 304.2092424879.

Adding to 28152516 its reverse (61525182), we get a palindrome (89677698).

It can be divided in two parts, 2 and 8152516, that added together give a palindrome (8152518).

The spelling of 28152516 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred sixteen".