197197420 has 48 divisors (see below), whose sum is σ = 486077760. Its totient is φ = 65781504.

The previous prime is 197197381. The next prime is 197197421. The reversal of 197197420 is 24791791.

It is not an unprimeable number, because it can be changed into a prime (197197421) 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, 13855 + ... + 24214.

It is an arithmetic number, because the mean of its divisors is an integer number (10126620).

Almost surely, 2^197197420 is an apocalyptic number.

197197420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197197420 is an abundant number, since it is smaller than the sum of its proper divisors (288880340).

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

197197420 is a wasteful number, since it uses less digits than its factorization.

197197420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38122 (or 38120 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 197197420 is about 14042.6998828573. The cubic root of 197197420 is about 582.0590902951.

The spelling of 197197420 in words is "one hundred ninety-seven million, one hundred ninety-seven thousand, four hundred twenty".