194728320 has 256 divisors, whose sum is σ = 705024000. Its totient is φ = 50780160.

The previous prime is 194728309. The next prime is 194728333. The reversal of 194728320 is 23827491.

It is a super-2 number, since 2×194728320² = 75838237220044800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1019425 + ... + 1019615.

It is an arithmetic number, because the mean of its divisors is an integer number (2754000).

Almost surely, 2^194728320 is an apocalyptic number.

194728320 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 194728320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352512000).

194728320 is an abundant number, since it is smaller than the sum of its proper divisors (510295680).

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

194728320 is a wasteful number, since it uses less digits than its factorization.

194728320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 194728320 is about 13954.5089487233. The cubic root of 194728320 is about 579.6195682003.

The spelling of 194728320 in words is "one hundred ninety-four million, seven hundred twenty-eight thousand, three hundred twenty".