191424 has 28 divisors (see below), whose sum is σ = 506984. Its totient is φ = 63744.

The previous prime is 191413. The next prime is 191441. The reversal of 191424 is 424191.

191424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 191424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307 + ... + 690.

2¹⁹¹⁴²⁴ is an apocalyptic number.

It is an amenable number.

191424 is an abundant number, since it is smaller than the sum of its proper divisors (315560).

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

191424 is an equidigital number, since it uses as much as digits as its factorization.

191424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1002 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 191424 is about 437.5202852440. The cubic root of 191424 is about 57.6322350432.

The spelling of 191424 in words is "one hundred ninety-one thousand, four hundred twenty-four".