194471928 has 192 divisors, whose sum is σ = 645765120. Its totient is φ = 53654400.

The previous prime is 194471917. The next prime is 194471933. The reversal of 194471928 is 829174491.

It is a happy number.

194471928 is a `hidden beast` number, since 1 + 94 + 471 + 92 + 8 = 666.

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

Its product of digits (145152) is a multiple of the sum of its prime divisors (504).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 421618 + ... + 422078.

It is an arithmetic number, because the mean of its divisors is an integer number (3363360).

Almost surely, 2^194471928 is an apocalyptic number.

194471928 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 194471928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322882560).

194471928 is an abundant number, since it is smaller than the sum of its proper divisors (451293192).

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

194471928 is a wasteful number, since it uses less digits than its factorization.

194471928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 504 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 194471928 is about 13945.3192147043. The cubic root of 194471928 is about 579.3650681679.

The spelling of 194471928 in words is "one hundred ninety-four million, four hundred seventy-one thousand, nine hundred twenty-eight".