197272536 has 72 divisors (see below), whose sum is σ = 512293860. Its totient is φ = 63303360.

The previous prime is 197272531. The next prime is 197272547. The reversal of 197272536 is 635272791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197272531) 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 17 ways as a sum of consecutive naturals, for example, 3233946 + ... + 3234006.

Almost surely, 2^197272536 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 197272536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256146930).

197272536 is an abundant number, since it is smaller than the sum of its proper divisors (315021324).

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

197272536 is an equidigital number, since it uses as much as digits as its factorization.

197272536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 113 counting only the distinct ones).

The product of its digits is 158760, while the sum is 42.

The square root of 197272536 is about 14045.3741851187. The cubic root of 197272536 is about 582.1329864619.

The spelling of 197272536 in words is "one hundred ninety-seven million, two hundred seventy-two thousand, five hundred thirty-six".