197830 has 16 divisors (see below), whose sum is σ = 362304. Its totient is φ = 77760.

The previous prime is 197807. The next prime is 197831. The reversal of 197830 is 38791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197831) by changing a digit.

197830 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (22644).

2¹⁹⁷⁸³⁰ is an apocalyptic number.

197830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197830 is a deficient number, since it is larger than the sum of its proper divisors (164474).

197830 is a wasteful number, since it uses less digits than its factorization.

197830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 197830 is about 444.7808449113. The cubic root of 197830 is about 58.2680812307.

It can be divided in two parts, 1978 and 30, that multiplied together give a triangular number (59340 = T₃₄₄).

The spelling of 197830 in words is "one hundred ninety-seven thousand, eight hundred thirty".