197597872 has 40 divisors (see below), whose sum is σ = 404103600. Its totient is φ = 93341952.

The previous prime is 197597837. The next prime is 197597927. The reversal of 197597872 is 278795791.

197597872 is digitally balanced in base 2 and base 3, because in such bases 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, 154098 + ... + 155374.

It is an arithmetic number, because the mean of its divisors is an integer number (10102590).

Almost surely, 2^197597872 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 197597872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202051800).

197597872 is an abundant number, since it is smaller than the sum of its proper divisors (206505728).

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

197597872 is a wasteful number, since it uses less digits than its factorization.

197597872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813 (or 1807 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 55.

The square root of 197597872 is about 14056.9510207584. The cubic root of 197597872 is about 582.4528228414.

The spelling of 197597872 in words is "one hundred ninety-seven million, five hundred ninety-seven thousand, eight hundred seventy-two".