197156448 has 72 divisors (see below), whose sum is σ = 563727528. Its totient is φ = 65359872.

The previous prime is 197156447. The next prime is 197156459. The reversal of 197156448 is 844651791.

197156448 is a `hidden beast` number, since 19 + 71 + 564 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197156447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53811 + ... + 57357.

It is an arithmetic number, because the mean of its divisors is an integer number (7829549).

Almost surely, 2^197156448 is an apocalyptic number.

197156448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197156448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281863764).

197156448 is an abundant number, since it is smaller than the sum of its proper divisors (366571080).

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

197156448 is a wasteful number, since it uses less digits than its factorization.

197156448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3745 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 197156448 is about 14041.2409707974. The cubic root of 197156448 is about 582.0187757432.

The spelling of 197156448 in words is "one hundred ninety-seven million, one hundred fifty-six thousand, four hundred forty-eight".