197085728 has 48 divisors (see below), whose sum is σ = 445152960. Its totient is φ = 84139776.

The previous prime is 197085719. The next prime is 197085731. The reversal of 197085728 is 827580791.

197085728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 61838 + ... + 64946.

It is an arithmetic number, because the mean of its divisors is an integer number (9274020).

Almost surely, 2^197085728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197085728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222576480).

197085728 is an abundant number, since it is smaller than the sum of its proper divisors (248067232).

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

197085728 is a wasteful number, since it uses less digits than its factorization.

197085728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 197085728 is about 14038.7224489980. The cubic root of 197085728 is about 581.9491773935.

The spelling of 197085728 in words is "one hundred ninety-seven million, eighty-five thousand, seven hundred twenty-eight".