1671228 has 36 divisors (see below), whose sum is σ = 4550728. Its totient is φ = 514080.

The previous prime is 1671227. The next prime is 1671277. The reversal of 1671228 is 8221761.

It is a tau number, because it is divible by the number of its divisors (36).

It is an Ulam number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1318 + ... + 2253.

2^1671228 is an apocalyptic number.

1671228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1671228 is an abundant number, since it is smaller than the sum of its proper divisors (2879500).

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

1671228 is a wasteful number, since it uses less digits than its factorization.

1671228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3589 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1671228 is about 1292.7598384851. The cubic root of 1671228 is about 118.6711728009.

Adding to 1671228 its reverse (8221761), we get a palindrome (9892989).

The spelling of 1671228 in words is "one million, six hundred seventy-one thousand, two hundred twenty-eight".