194891328 has 168 divisors, whose sum is σ = 597212928. Its totient is φ = 60622848.

The previous prime is 194891299. The next prime is 194891329. The reversal of 194891328 is 823198491.

194891328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (194891329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 622500 + ... + 622812.

Almost surely, 2^194891328 is an apocalyptic number.

194891328 is a gapful number since it is divisible by the number (18) 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 194891328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298606464).

194891328 is an abundant number, since it is smaller than the sum of its proper divisors (402321600).

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

194891328 is a wasteful number, since it uses less digits than its factorization.

194891328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 388 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 194891328 is about 13960.3484197208. The cubic root of 194891328 is about 579.7812571881.

The spelling of 194891328 in words is "one hundred ninety-four million, eight hundred ninety-one thousand, three hundred twenty-eight".