197256128 has 14 divisors (see below), whose sum is σ = 391430256. Its totient is φ = 98628032.

The previous prime is 197256061. The next prime is 197256167. The reversal of 197256128 is 821652791.

It is a congruent 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 as a sum of consecutive naturals, namely, 1541000 + ... + 1541127.

It is an arithmetic number, because the mean of its divisors is an integer number (27959304).

Almost surely, 2^197256128 is an apocalyptic number.

It is an amenable number.

197256128 is a deficient number, since it is larger than the sum of its proper divisors (194174128).

197256128 is an equidigital number, since it uses as much as digits as its factorization.

197256128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082139 (or 3082129 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 197256128 is about 14044.7900660708. The cubic root of 197256128 is about 582.1168465182.

The spelling of 197256128 in words is "one hundred ninety-seven million, two hundred fifty-six thousand, one hundred twenty-eight".