197239972 has 12 divisors (see below), whose sum is σ = 345439360. Its totient is φ = 98543016.

The previous prime is 197239961. The next prime is 197239979. The reversal of 197239972 is 279932791.

It is not an unprimeable number, because it can be changed into a prime (197239979) 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, 13272 + ... + 23887.

Almost surely, 2^197239972 is an apocalyptic number.

It is an amenable number.

197239972 is a deficient number, since it is larger than the sum of its proper divisors (148199388).

197239972 is a wasteful number, since it uses less digits than its factorization.

197239972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38490 (or 38488 counting only the distinct ones).

The product of its digits is 428652, while the sum is 49.

The square root of 197239972 is about 14044.2148943969. The cubic root of 197239972 is about 582.1009535830.

The spelling of 197239972 in words is "one hundred ninety-seven million, two hundred thirty-nine thousand, nine hundred seventy-two".