28601316 has 24 divisors (see below), whose sum is σ = 74151840. Its totient is φ = 9533736.

The previous prime is 28601297. The next prime is 28601341. The reversal of 28601316 is 61310682.

28601316 is a `hidden beast` number, since 28 + 601 + 31 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 28601316.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132306 + ... + 132521.

It is an arithmetic number, because the mean of its divisors is an integer number (3089660).

Almost surely, 2^28601316 is an apocalyptic number.

It is an amenable number.

28601316 is an abundant number, since it is smaller than the sum of its proper divisors (45550524).

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

28601316 is a wasteful number, since it uses less digits than its factorization.

28601316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264840 (or 264832 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28601316 is about 5348.0198204569. The cubic root of 28601316 is about 305.8172688334.

Adding to 28601316 its reverse (61310682), we get a palindrome (89911998).

The spelling of 28601316 in words is "twenty-eight million, six hundred one thousand, three hundred sixteen".