197540880 has 80 divisors (see below), whose sum is σ = 617293824. Its totient is φ = 52254720.

The previous prime is 197540869. The next prime is 197540881. The reversal of 197540880 is 88045791.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (197540881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27240 + ... + 33720.

Almost surely, 2^197540880 is an apocalyptic number.

197540880 is a gapful number since it is divisible by the number (10) 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 197540880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308646912).

197540880 is an abundant number, since it is smaller than the sum of its proper divisors (419752944).

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

197540880 is a wasteful number, since it uses less digits than its factorization.

197540880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6624 (or 6618 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 197540880 is about 14054.9236924289. The cubic root of 197540880 is about 582.3968196350.

The spelling of 197540880 in words is "one hundred ninety-seven million, five hundred forty thousand, eight hundred eighty".