191842028 has 24 divisors (see below), whose sum is σ = 384344352. Its totient is φ = 82076544.

The previous prime is 191841983. The next prime is 191842037. The reversal of 191842028 is 820248191.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11576 + ... + 22752.

It is an arithmetic number, because the mean of its divisors is an integer number (16014348).

Almost surely, 2^191842028 is an apocalyptic number.

It is an amenable number.

191842028 is an abundant number, since it is smaller than the sum of its proper divisors (192502324).

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

191842028 is a wasteful number, since it uses less digits than its factorization.

191842028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11801 (or 11799 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 191842028 is about 13850.7049640081. The cubic root of 191842028 is about 576.7415659264.

It can be divided in two parts, 19184 and 2028, that added together give a palindrome (21212).

The spelling of 191842028 in words is "one hundred ninety-one million, eight hundred forty-two thousand, twenty-eight".