197318328 has 16 divisors (see below), whose sum is σ = 493295880. Its totient is φ = 65772768.

The previous prime is 197318327. The next prime is 197318333. The reversal of 197318328 is 823813791.

It is a self number, because there is not a number n which added to its sum of digits gives 197318328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197318321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4110775 + ... + 4110822.

Almost surely, 2^197318328 is an apocalyptic number.

It is an amenable number.

197318328 is an abundant number, since it is smaller than the sum of its proper divisors (295977552).

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

197318328 is a wasteful number, since it uses less digits than its factorization.

197318328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221606 (or 8221602 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 197318328 is about 14047.0042357792. The cubic root of 197318328 is about 582.1780256277.

It can be divided in two parts, 1973 and 18328, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 197318328 in words is "one hundred ninety-seven million, three hundred eighteen thousand, three hundred twenty-eight".