197527940 has 24 divisors (see below), whose sum is σ = 417213720. Its totient is φ = 78553088.

The previous prime is 197527937. The next prime is 197527949. The reversal of 197527940 is 49725791.

It can be written as a sum of positive squares in 4 ways, for example, as 49224256 + 148303684 = 7016^2 + 12178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 197527891 and 197527900.

It is not an unprimeable number, because it can be changed into a prime (197527949) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25085 + ... + 32004.

It is an arithmetic number, because the mean of its divisors is an integer number (17383905).

Almost surely, 2^197527940 is an apocalyptic number.

197527940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197527940 is an abundant number, since it is smaller than the sum of its proper divisors (219685780).

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

197527940 is a wasteful number, since it uses less digits than its factorization.

197527940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57271 (or 57269 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 197527940 is about 14054.4633479902. The cubic root of 197527940 is about 582.3841026396.

The spelling of 197527940 in words is "one hundred ninety-seven million, five hundred twenty-seven thousand, nine hundred forty".