197844090 has 32 divisors (see below), whose sum is σ = 491201280. Its totient is φ = 50938944.

The previous prime is 197844043. The next prime is 197844109. The reversal of 197844090 is 90448791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112834 + ... + 114573.

It is an arithmetic number, because the mean of its divisors is an integer number (15350040).

Almost surely, 2^197844090 is an apocalyptic number.

197844090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197844090 is an abundant number, since it is smaller than the sum of its proper divisors (293357190).

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

197844090 is a wasteful number, since it uses less digits than its factorization.

197844090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227446.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 197844090 is about 14065.7061678396. The cubic root of 197844090 is about 582.6946453589.

The spelling of 197844090 in words is "one hundred ninety-seven million, eight hundred forty-four thousand, ninety".