197939328 has 64 divisors (see below), whose sum is σ = 527340000. Its totient is φ = 65783808.

The previous prime is 197939303. The next prime is 197939333. The reversal of 197939328 is 823939791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 191100 + ... + 192132.

Almost surely, 2^197939328 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 197939328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263670000).

197939328 is an abundant number, since it is smaller than the sum of its proper divisors (329400672).

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

197939328 is a wasteful number, since it uses less digits than its factorization.

197939328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1537 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 197939328 is about 14069.0912286473. The cubic root of 197939328 is about 582.7881293583.

The spelling of 197939328 in words is "one hundred ninety-seven million, nine hundred thirty-nine thousand, three hundred twenty-eight".