628194168 has 144 divisors (see below), whose sum is σ = 2010705840. Its totient is φ = 173560320.

The previous prime is 628194167. The next prime is 628194221. The reversal of 628194168 is 861491826.

628194168 is a `hidden beast` number, since 628 + 1 + 9 + 4 + 16 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628194167) 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 35 ways as a sum of consecutive naturals, for example, 483696 + ... + 484992.

It is an arithmetic number, because the mean of its divisors is an integer number (13963235).

Almost surely, 2^628194168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628194168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005352920).

628194168 is an abundant number, since it is smaller than the sum of its proper divisors (1382511672).

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

628194168 is a wasteful number, since it uses less digits than its factorization.

628194168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1340 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 628194168 is about 25063.8019462331. The cubic root of 628194168 is about 856.4420192153.

The spelling of 628194168 in words is "six hundred twenty-eight million, one hundred ninety-four thousand, one hundred sixty-eight".