197315380 has 36 divisors (see below), whose sum is σ = 437334660. Its totient is φ = 74769408.

The previous prime is 197315357. The next prime is 197315381. The reversal of 197315380 is 83513791.

It is a happy number.

197315380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 82482724 + 114832656 = 9082^2 + 10716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197315381) 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, 6445 + ... + 20884.

It is an arithmetic number, because the mean of its divisors is an integer number (12148185).

Almost surely, 2^197315380 is an apocalyptic number.

197315380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197315380 is an abundant number, since it is smaller than the sum of its proper divisors (240019280).

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

197315380 is a wasteful number, since it uses less digits than its factorization.

197315380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27376 (or 27355 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 197315380 is about 14046.8993019812. The cubic root of 197315380 is about 582.1751263036.

The spelling of 197315380 in words is "one hundred ninety-seven million, three hundred fifteen thousand, three hundred eighty".