197221088928 has 48 divisors (see below), whose sum is σ = 544953013920. Its totient is φ = 62280343296.

The previous prime is 197221088921. The next prime is 197221088971. The reversal of 197221088928 is 829880122791.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (197221088921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54060975 + ... + 54064622.

It is an arithmetic number, because the mean of its divisors is an integer number (11353187790).

Almost surely, 2^197221088928 is an apocalyptic number.

It is an amenable number.

197221088928 is an abundant number, since it is smaller than the sum of its proper divisors (347731924992).

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

197221088928 is a wasteful number, since it uses less digits than its factorization.

197221088928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108125629 (or 108125621 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 57.

The spelling of 197221088928 in words is "one hundred ninety-seven billion, two hundred twenty-one million, eighty-eight thousand, nine hundred twenty-eight".