283428191 has 4 divisors (see below), whose sum is σ = 283462872. Its totient is φ = 283393512.

The previous prime is 283428181. The next prime is 283428209. The reversal of 283428191 is 191824382.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 283428191 - 2²² = 279233887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283428181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2441 + ... + 23933.

It is an arithmetic number, because the mean of its divisors is an integer number (70865718).

Almost surely, 2^283428191 is an apocalyptic number.

283428191 is a deficient number, since it is larger than the sum of its proper divisors (34681).

283428191 is a wasteful number, since it uses less digits than its factorization.

283428191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34680.

The product of its digits is 27648, while the sum is 38.

The square root of 283428191 is about 16835.3256873753. The cubic root of 283428191 is about 656.8724008868.

The spelling of 283428191 in words is "two hundred eighty-three million, four hundred twenty-eight thousand, one hundred ninety-one".