194442428 has 24 divisors (see below), whose sum is σ = 359158800. Its totient is φ = 91853568.

The previous prime is 194442427. The next prime is 194442439. The reversal of 194442428 is 824244491.

It is a super-3 number, since 3×194442428³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 194442391 and 194442400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194442427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26276 + ... + 32852.

It is an arithmetic number, because the mean of its divisors is an integer number (14964950).

Almost surely, 2^194442428 is an apocalyptic number.

It is an amenable number.

194442428 is a deficient number, since it is larger than the sum of its proper divisors (164716372).

194442428 is a wasteful number, since it uses less digits than its factorization.

194442428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989 (or 6987 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 194442428 is about 13944.2614720178. The cubic root of 194442428 is about 579.3357715081.

The spelling of 194442428 in words is "one hundred ninety-four million, four hundred forty-two thousand, four hundred twenty-eight".