671228 has 12 divisors (see below), whose sum is σ = 1243872. Its totient is φ = 315840.

The previous prime is 671219. The next prime is 671233. The reversal of 671228 is 822176.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 671197 and 671206.

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, 4868 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (103656).

2⁶⁷¹²²⁸ is an apocalyptic number.

671228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

671228 is a deficient number, since it is larger than the sum of its proper divisors (572644).

671228 is a wasteful number, since it uses less digits than its factorization.

671228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9892 (or 9890 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 671228 is about 819.2850541783. The cubic root of 671228 is about 87.5568283900.

The spelling of 671228 in words is "six hundred seventy-one thousand, two hundred twenty-eight".