194427144 has 24 divisors (see below), whose sum is σ = 526573710. Its totient is φ = 64809024.

The previous prime is 194427061. The next prime is 194427151. The reversal of 194427144 is 441724491.

194427144 is a `hidden beast` number, since 1 + 94 + 427 + 144 = 666.

It can be written as a sum of positive squares in only one way, i.e., 126562500 + 67864644 = 11250^2 + 8238^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 194427099 and 194427108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1350117 + ... + 1350260.

Almost surely, 2^194427144 is an apocalyptic number.

It is an amenable number.

194427144 is an abundant number, since it is smaller than the sum of its proper divisors (332146566).

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

194427144 is a wasteful number, since it uses less digits than its factorization.

194427144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700389 (or 2700382 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 194427144 is about 13943.7134221842. The cubic root of 194427144 is about 579.3205916936.

The spelling of 194427144 in words is "one hundred ninety-four million, four hundred twenty-seven thousand, one hundred forty-four".