191298428 has 6 divisors (see below), whose sum is σ = 334772256. Its totient is φ = 95649212.

The previous prime is 191298407. The next prime is 191298439. The reversal of 191298428 is 824892191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23912300 + ... + 23912307.

It is an arithmetic number, because the mean of its divisors is an integer number (55795376).

Almost surely, 2^191298428 is an apocalyptic number.

It is an amenable number.

191298428 is a deficient number, since it is larger than the sum of its proper divisors (143473828).

191298428 is a wasteful number, since it uses less digits than its factorization.

191298428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47824611 (or 47824609 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 191298428 is about 13831.0674931474. The cubic root of 191298428 is about 576.1963025299.

The spelling of 191298428 in words is "one hundred ninety-one million, two hundred ninety-eight thousand, four hundred twenty-eight".