65517228 has 96 divisors (see below), whose sum is σ = 196761600. Its totient is φ = 18465408.

The previous prime is 65517227. The next prime is 65517241. The reversal of 65517228 is 82271556.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65517192 and 65517201.

It is not an unprimeable number, because it can be changed into a prime (65517227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59176 + ... + 60272.

It is an arithmetic number, because the mean of its divisors is an integer number (2049600).

Almost surely, 2^65517228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65517228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98380800).

65517228 is an abundant number, since it is smaller than the sum of its proper divisors (131244372).

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

65517228 is a wasteful number, since it uses less digits than its factorization.

65517228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 1188 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 65517228 is about 8094.2713075360. The cubic root of 65517228 is about 403.1362374369.

The spelling of 65517228 in words is "sixty-five million, five hundred seventeen thousand, two hundred twenty-eight".