197323790 has 16 divisors (see below), whose sum is σ = 358443360. Its totient is φ = 78204960.

The previous prime is 197323783. The next prime is 197323793. The reversal of 197323790 is 97323791.

197323790 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197323793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89426 + ... + 91605.

It is an arithmetic number, because the mean of its divisors is an integer number (22402710).

Almost surely, 2^197323790 is an apocalyptic number.

197323790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197323790 is a deficient number, since it is larger than the sum of its proper divisors (161119570).

197323790 is a wasteful number, since it uses less digits than its factorization.

197323790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181147.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 197323790 is about 14047.1986531123. The cubic root of 197323790 is about 582.1833973656.

Subtracting from 197323790 its reverse (97323791), we obtain a palindrome (99999999).

The spelling of 197323790 in words is "one hundred ninety-seven million, three hundred twenty-three thousand, seven hundred ninety".