194835220 has 24 divisors (see below), whose sum is σ = 415864008. Its totient is φ = 76656000.

The previous prime is 194835203. The next prime is 194835227. The reversal of 194835220 is 22538491.

It can be written as a sum of positive squares in 4 ways, for example, as 121104 + 194714116 = 348^2 + 13954^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194835227) 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, 78631 + ... + 81070.

It is an arithmetic number, because the mean of its divisors is an integer number (17327667).

Almost surely, 2^194835220 is an apocalyptic number.

194835220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194835220 is an abundant number, since it is smaller than the sum of its proper divisors (221028788).

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

194835220 is a wasteful number, since it uses less digits than its factorization.

194835220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159771 (or 159769 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 194835220 is about 13958.3387263671. The cubic root of 194835220 is about 579.7256133764.

The spelling of 194835220 in words is "one hundred ninety-four million, eight hundred thirty-five thousand, two hundred twenty".