197445100 has 36 divisors (see below), whose sum is σ = 429519384. Its totient is φ = 78782080.

The previous prime is 197445077. The next prime is 197445109. The reversal of 197445100 is 1544791.

It is not an unprimeable number, because it can be changed into a prime (197445109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42072 + ... + 46528.

It is an arithmetic number, because the mean of its divisors is an integer number (11931094).

Almost surely, 2^197445100 is an apocalyptic number.

197445100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197445100 is an abundant number, since it is smaller than the sum of its proper divisors (232074284).

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

197445100 is a wasteful number, since it uses less digits than its factorization.

197445100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914 (or 4907 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 197445100 is about 14051.5159324537. The cubic root of 197445100 is about 582.3026771208.

Adding to 197445100 its reverse (1544791), we get a palindrome (198989891).

It can be divided in two parts, 1974 and 45100, that added together give a palindrome (47074).

The spelling of 197445100 in words is "one hundred ninety-seven million, four hundred forty-five thousand, one hundred".