84128235 has 8 divisors (see below), whose sum is σ = 134605200. Its totient is φ = 44868384.

The previous prime is 84128173. The next prime is 84128249. The reversal of 84128235 is 53282148.

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

It is not a de Polignac number, because 84128235 - 2¹⁸ = 83866091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84128196 and 84128205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804260 + ... + 2804289.

It is an arithmetic number, because the mean of its divisors is an integer number (16825650).

Almost surely, 2^84128235 is an apocalyptic number.

84128235 is a deficient number, since it is larger than the sum of its proper divisors (50476965).

84128235 is a wasteful number, since it uses less digits than its factorization.

84128235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608557.

The product of its digits is 15360, while the sum is 33.

The square root of 84128235 is about 9172.1445147795. The cubic root of 84128235 is about 438.1746608516.

The spelling of 84128235 in words is "eighty-four million, one hundred twenty-eight thousand, two hundred thirty-five".