197812830 has 32 divisors (see below), whose sum is σ = 475121664. Its totient is φ = 52708896.

The previous prime is 197812817. The next prime is 197812831. The reversal of 197812830 is 38218791.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197812831) 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, 70107 + ... + 72873.

It is an arithmetic number, because the mean of its divisors is an integer number (14847552).

Almost surely, 2^197812830 is an apocalyptic number.

197812830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197812830 is an abundant number, since it is smaller than the sum of its proper divisors (277308834).

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

197812830 is a wasteful number, since it uses less digits than its factorization.

197812830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 197812830 is about 14064.5949106258. The cubic root of 197812830 is about 582.6639545356.

The spelling of 197812830 in words is "one hundred ninety-seven million, eight hundred twelve thousand, eight hundred thirty".