84128029 has 8 divisors (see below), whose sum is σ = 88740000. Its totient is φ = 79534512.

The previous prime is 84127999. The next prime is 84128059. The reversal of 84128029 is 92082148.

It is an interprime number because it is at equal distance from previous prime (84127999) and next prime (84128059).

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

It is a cyclic number.

It is not a de Polignac number, because 84128029 - 2²¹ = 82030877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84127985 and 84128003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84128059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5322 + ... + 14020.

It is an arithmetic number, because the mean of its divisors is an integer number (11092500).

Almost surely, 2^84128029 is an apocalyptic number.

It is an amenable number.

84128029 is a deficient number, since it is larger than the sum of its proper divisors (4611971).

84128029 is a wasteful number, since it uses less digits than its factorization.

84128029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 84128029 is about 9172.1332851197. The cubic root of 84128029 is about 438.1743032069.

The spelling of 84128029 in words is "eighty-four million, one hundred twenty-eight thousand, twenty-nine".