83428171 has 4 divisors (see below), whose sum is σ = 83700232. Its totient is φ = 83156112.

The previous prime is 83428159. The next prime is 83428211. The reversal of 83428171 is 17182438.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83428171 - 2²⁵ = 49873739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83428271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135570 + ... + 136183.

It is an arithmetic number, because the mean of its divisors is an integer number (20925058).

Almost surely, 2^83428171 is an apocalyptic number.

83428171 is a deficient number, since it is larger than the sum of its proper divisors (272061).

83428171 is a wasteful number, since it uses less digits than its factorization.

83428171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272060.

The product of its digits is 10752, while the sum is 34.

The square root of 83428171 is about 9133.9022876315. The cubic root of 83428171 is about 436.9558662166.

The spelling of 83428171 in words is "eighty-three million, four hundred twenty-eight thousand, one hundred seventy-one".