28617316 has 48 divisors (see below), whose sum is σ = 63786240. Its totient is φ = 10926720.

The previous prime is 28617311. The next prime is 28617349. The reversal of 28617316 is 61371682.

It is not an unprimeable number, because it can be changed into a prime (28617311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9201 + ... + 11911.

It is an arithmetic number, because the mean of its divisors is an integer number (1328880).

Almost surely, 2^28617316 is an apocalyptic number.

28617316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28617316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31893120).

28617316 is an abundant number, since it is smaller than the sum of its proper divisors (35168924).

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

28617316 is a wasteful number, since it uses less digits than its factorization.

28617316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2762 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 28617316 is about 5349.5154920796. The cubic root of 28617316 is about 305.8742844403.

Adding to 28617316 its reverse (61371682), we get a palindrome (89988998).

The spelling of 28617316 in words is "twenty-eight million, six hundred seventeen thousand, three hundred sixteen".