65831228 has 12 divisors (see below), whose sum is σ = 118921152. Its totient is φ = 31853760.

The previous prime is 65831209. The next prime is 65831239. The reversal of 65831228 is 82213856.

65831228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265325 + ... + 265572.

It is an arithmetic number, because the mean of its divisors is an integer number (9910096).

Almost surely, 2^65831228 is an apocalyptic number.

It is an amenable number.

65831228 is a deficient number, since it is larger than the sum of its proper divisors (53089924).

65831228 is a wasteful number, since it uses less digits than its factorization.

65831228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530932 (or 530930 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 65831228 is about 8113.6445571642. The cubic root of 65831228 is about 403.7792392567.

The spelling of 65831228 in words is "sixty-five million, eight hundred thirty-one thousand, two hundred twenty-eight".