194220320 has 96 divisors (see below), whose sum is σ = 535248000. Its totient is φ = 66571008.

The previous prime is 194220319. The next prime is 194220331. The reversal of 194220320 is 23022491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53111 + ... + 56649.

It is an arithmetic number, because the mean of its divisors is an integer number (5575500).

Almost surely, 2^194220320 is an apocalyptic number.

194220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267624000).

194220320 is an abundant number, since it is smaller than the sum of its proper divisors (341027680).

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

194220320 is an equidigital number, since it uses as much as digits as its factorization.

194220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575 (or 3553 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 194220320 is about 13936.2950600222. The cubic root of 194220320 is about 579.1150992738.

The spelling of 194220320 in words is "one hundred ninety-four million, two hundred twenty thousand, three hundred twenty".