197667228 has 96 divisors (see below), whose sum is σ = 542142720. Its totient is φ = 55383040.

The previous prime is 197667227. The next prime is 197667229. The reversal of 197667228 is 822766791.

It is an interprime number because it is at equal distance from previous prime (197667227) and next prime (197667229).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197667227) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 131650 + ... + 133142.

It is an arithmetic number, because the mean of its divisors is an integer number (5647320).

Almost surely, 2^197667228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197667228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271071360).

197667228 is an abundant number, since it is smaller than the sum of its proper divisors (344475492).

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

197667228 is a wasteful number, since it uses less digits than its factorization.

197667228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1585 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 197667228 is about 14059.4177688836. The cubic root of 197667228 is about 582.5209610121.

The spelling of 197667228 in words is "one hundred ninety-seven million, six hundred sixty-seven thousand, two hundred twenty-eight".