197709056 has 36 divisors (see below), whose sum is σ = 405331332. Its totient is φ = 96178176.

The previous prime is 197708993. The next prime is 197709073. The reversal of 197709056 is 650907791.

It can be written as a sum of positive squares in 2 ways, for example, as 125798656 + 71910400 = 11216^2 + 8480^2 .

It is a super-2 number, since 2×197709056² = 78177741648822272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197708998 and 197709016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965 + ... + 19908.

Almost surely, 2^197709056 is an apocalyptic number.

197709056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

197709056 is an abundant number, since it is smaller than the sum of its proper divisors (207622276).

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

197709056 is an equidigital number, since it uses as much as digits as its factorization.

197709056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926 (or 20912 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 197709056 is about 14060.9052340168. The cubic root of 197709056 is about 582.5620468453.

The spelling of 197709056 in words is "one hundred ninety-seven million, seven hundred nine thousand, fifty-six".