194222000 has 80 divisors (see below), whose sum is σ = 536757312. Its totient is φ = 66585600.

The previous prime is 194221997. The next prime is 194222029. The reversal of 194222000 is 222491.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7064 + ... + 20936.

Almost surely, 2^194222000 is an apocalyptic number.

194222000 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 194222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268378656).

194222000 is an abundant number, since it is smaller than the sum of its proper divisors (342535312).

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

194222000 is a wasteful number, since it uses less digits than its factorization.

194222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13903 (or 13887 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 194222000 is about 13936.3553341611. The cubic root of 194222000 is about 579.1167690452.

Adding to 194222000 its reverse (222491), we get a palindrome (194444491).

The spelling of 194222000 in words is "one hundred ninety-four million, two hundred twenty-two thousand".