197888880 has 160 divisors (see below), whose sum is σ = 712954368. Its totient is φ = 44467200.

The previous prime is 197888869. The next prime is 197888921. The reversal of 197888880 is 88888791.

It is a self number, because there is not a number n which added to its sum of digits gives 197888880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101515 + ... + 103445.

Almost surely, 2^197888880 is an apocalyptic number.

197888880 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 197888880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356477184).

197888880 is an abundant number, since it is smaller than the sum of its proper divisors (515065488).

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

197888880 is a wasteful number, since it uses less digits than its factorization.

197888880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 57.

The square root of 197888880 is about 14067.2982480646. The cubic root of 197888880 is about 582.7386141963.

The spelling of 197888880 in words is "one hundred ninety-seven million, eight hundred eighty-eight thousand, eight hundred eighty".