73228 has 6 divisors (see below), whose sum is σ = 128156. Its totient is φ = 36612.

The previous prime is 73189. The next prime is 73237. The reversal of 73228 is 82237.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 73199 and 73208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9150 + ... + 9157.

2⁷³²²⁸ is an apocalyptic number.

It is an amenable number.

73228 is a deficient number, since it is larger than the sum of its proper divisors (54928).

73228 is a wasteful number, since it uses less digits than its factorization.

73228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18311 (or 18309 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 73228 is about 270.6067257109. The cubic root of 73228 is about 41.8368576718.

Subtracting 73228 from its reverse (82237), we obtain a palindrome (9009).

The spelling of 73228 in words is "seventy-three thousand, two hundred twenty-eight".