197871408 has 180 divisors, whose sum is σ = 667077840. Its totient is φ = 54528768.

The previous prime is 197871361. The next prime is 197871409. The reversal of 197871408 is 804178791.

197871408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (197871409) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 204141 + ... + 205107.

It is an arithmetic number, because the mean of its divisors is an integer number (3705988).

Almost surely, 2^197871408 is an apocalyptic number.

197871408 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 197871408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333538920).

197871408 is an abundant number, since it is smaller than the sum of its proper divisors (469206432).

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

197871408 is a wasteful number, since it uses less digits than its factorization.

197871408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 197871408 is about 14066.6772195853. The cubic root of 197871408 is about 582.7214633106.

The spelling of 197871408 in words is "one hundred ninety-seven million, eight hundred seventy-one thousand, four hundred eight".