1611228 has 12 divisors (see below), whose sum is σ = 3759560. Its totient is φ = 537072.

The previous prime is 1611227. The next prime is 1611241. The reversal of 1611228 is 8221161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67123 + ... + 67146.

2^1611228 is an apocalyptic number.

It is an amenable number.

1611228 is an abundant number, since it is smaller than the sum of its proper divisors (2148332).

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

1611228 is a wasteful number, since it uses less digits than its factorization.

1611228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134276 (or 134274 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 1611228 is about 1269.3415615980. The cubic root of 1611228 is about 117.2336626310.

Adding to 1611228 its reverse (8221161), we get a palindrome (9832389).

The spelling of 1611228 in words is "one million, six hundred eleven thousand, two hundred twenty-eight".