197831928 has 32 divisors (see below), whose sum is σ = 565234560. Its totient is φ = 56523360.

The previous prime is 197831903. The next prime is 197831981. The reversal of 197831928 is 829138791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588618 + ... + 588953.

It is an arithmetic number, because the mean of its divisors is an integer number (17663580).

Almost surely, 2^197831928 is an apocalyptic number.

It is an amenable number.

197831928 is an abundant number, since it is smaller than the sum of its proper divisors (367402632).

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

197831928 is a wasteful number, since it uses less digits than its factorization.

197831928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177587 (or 1177583 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 197831928 is about 14065.2738330969. The cubic root of 197831928 is about 582.6827051867.

The spelling of 197831928 in words is "one hundred ninety-seven million, eight hundred thirty-one thousand, nine hundred twenty-eight".