197878688 has 48 divisors (see below), whose sum is σ = 446289984. Its totient is φ = 84602880.

The previous prime is 197878661. The next prime is 197878721. The reversal of 197878688 is 886878791.

197878688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 197878688.

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, 128483 + ... + 130013.

It is an arithmetic number, because the mean of its divisors is an integer number (9297708).

Almost surely, 2^197878688 is an apocalyptic number.

It is an amenable number.

197878688 is an abundant number, since it is smaller than the sum of its proper divisors (248411296).

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

197878688 is a wasteful number, since it uses less digits than its factorization.

197878688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2117 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 62.

The square root of 197878688 is about 14066.9359847836. The cubic root of 197878688 is about 582.7286096357.

The spelling of 197878688 in words is "one hundred ninety-seven million, eight hundred seventy-eight thousand, six hundred eighty-eight".