84128234 has 8 divisors (see below), whose sum is σ = 130263168. Its totient is φ = 40707180.

The previous prime is 84128173. The next prime is 84128249. The reversal of 84128234 is 43282148.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 84128234.

It is an unprimeable number.

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, 678392 + ... + 678515.

It is an arithmetic number, because the mean of its divisors is an integer number (16282896).

Almost surely, 2^84128234 is an apocalyptic number.

84128234 is a deficient number, since it is larger than the sum of its proper divisors (46134934).

84128234 is a wasteful number, since it uses less digits than its factorization.

84128234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356940.

The product of its digits is 12288, while the sum is 32.

The square root of 84128234 is about 9172.1444602666. The cubic root of 84128234 is about 438.1746591155.

The spelling of 84128234 in words is "eighty-four million, one hundred twenty-eight thousand, two hundred thirty-four".