197427980 has 48 divisors (see below), whose sum is σ = 422301600. Its totient is φ = 77518848.

The previous prime is 197427949. The next prime is 197427991. The reversal of 197427980 is 89724791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288719 + ... + 289401.

It is an arithmetic number, because the mean of its divisors is an integer number (8797950).

Almost surely, 2^197427980 is an apocalyptic number.

197427980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197427980 is an abundant number, since it is smaller than the sum of its proper divisors (224873620).

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

197427980 is a wasteful number, since it uses less digits than its factorization.

197427980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 197427980 is about 14050.9067323073. The cubic root of 197427980 is about 582.2858466027.

The spelling of 197427980 in words is "one hundred ninety-seven million, four hundred twenty-seven thousand, nine hundred eighty".