191422000 has 240 divisors, whose sum is σ = 586587456. Its totient is φ = 59136000.

The previous prime is 191421983. The next prime is 191422013. The reversal of 191422000 is 224191.

191422000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1693944 + ... + 1694056.

Almost surely, 2^191422000 is an apocalyptic number.

191422000 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 191422000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293293728).

191422000 is an abundant number, since it is smaller than the sum of its proper divisors (395165456).

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

191422000 is a wasteful number, since it uses less digits than its factorization.

191422000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 191422000 is about 13835.5339615065. The cubic root of 191422000 is about 576.3203432839.

Adding to 191422000 its reverse (224191), we get a palindrome (191646191).

The spelling of 191422000 in words is "one hundred ninety-one million, four hundred twenty-two thousand".