197371940 has 12 divisors (see below), whose sum is σ = 414481116. Its totient is φ = 78948768.

The previous prime is 197371939. The next prime is 197371963. The reversal of 197371940 is 49173791.

It can be written as a sum of positive squares in 2 ways, for example, as 141181924 + 56190016 = 11882^2 + 7496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4934279 + ... + 4934318.

It is an arithmetic number, because the mean of its divisors is an integer number (34540093).

Almost surely, 2^197371940 is an apocalyptic number.

197371940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197371940 is an abundant number, since it is smaller than the sum of its proper divisors (217109176).

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

197371940 is a wasteful number, since it uses less digits than its factorization.

197371940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868606 (or 9868604 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 197371940 is about 14048.9124134219. The cubic root of 197371940 is about 582.2307473765.

The spelling of 197371940 in words is "one hundred ninety-seven million, three hundred seventy-one thousand, nine hundred forty".