197297772 has 48 divisors (see below), whose sum is σ = 549007872. Its totient is φ = 53919360.

The previous prime is 197297719. The next prime is 197297809. The reversal of 197297772 is 277792791.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 49129 + ... + 52992.

It is an arithmetic number, because the mean of its divisors is an integer number (11437664).

Almost surely, 2^197297772 is an apocalyptic number.

197297772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197297772 is an abundant number, since it is smaller than the sum of its proper divisors (351710100).

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

197297772 is a wasteful number, since it uses less digits than its factorization.

197297772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102158 (or 102156 counting only the distinct ones).

The product of its digits is 777924, while the sum is 51.

The square root of 197297772 is about 14046.2725304616. The cubic root of 197297772 is about 582.1578084365.

The spelling of 197297772 in words is "one hundred ninety-seven million, two hundred ninety-seven thousand, seven hundred seventy-two".