197992860 has 96 divisors (see below), whose sum is σ = 617682240. Its totient is φ = 47050752.

The previous prime is 197992843. The next prime is 197992867. The reversal of 197992860 is 68299791.

It is a happy number.

197992860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197992860² = 78402345221959200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197992867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18244 + ... + 26996.

It is an arithmetic number, because the mean of its divisors is an integer number (6434190).

Almost surely, 2^197992860 is an apocalyptic number.

197992860 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 197992860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308841120).

197992860 is an abundant number, since it is smaller than the sum of its proper divisors (419689380).

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

197992860 is a wasteful number, since it uses less digits than its factorization.

197992860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8807 (or 8805 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 197992860 is about 14070.9935683306. The cubic root of 197992860 is about 582.8406622942.

The spelling of 197992860 in words is "one hundred ninety-seven million, nine hundred ninety-two thousand, eight hundred sixty".