197302990 has 8 divisors (see below), whose sum is σ = 355145400. Its totient is φ = 78921192.

The previous prime is 197302967. The next prime is 197302997. The reversal of 197302990 is 99203791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197302997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9865140 + ... + 9865159.

It is an arithmetic number, because the mean of its divisors is an integer number (44393175).

Almost surely, 2^197302990 is an apocalyptic number.

197302990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197302990 is a deficient number, since it is larger than the sum of its proper divisors (157842410).

197302990 is a wasteful number, since it uses less digits than its factorization.

197302990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19730306.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 197302990 is about 14046.4582724614. The cubic root of 197302990 is about 582.1629405652.

The spelling of 197302990 in words is "one hundred ninety-seven million, three hundred two thousand, nine hundred ninety".