84428832136 has 128 divisors (see below), whose sum is σ = 187019280000. Its totient is φ = 35313408000.

The previous prime is 84428832133. The next prime is 84428832139. The reversal of 84428832136 is 63123882448.

It is an interprime number because it is at equal distance from previous prime (84428832133) and next prime (84428832139).

It is a self number, because there is not a number n which added to its sum of digits gives 84428832136.

It is not an unprimeable number, because it can be changed into a prime (84428832133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64894686 + ... + 64895986.

It is an arithmetic number, because the mean of its divisors is an integer number (1461088125).

Almost surely, 2^84428832136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84428832136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93509640000).

84428832136 is an abundant number, since it is smaller than the sum of its proper divisors (102590447864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84428832136 is a wasteful number, since it uses less digits than its factorization.

84428832136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423 (or 2419 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The spelling of 84428832136 in words is "eighty-four billion, four hundred twenty-eight million, eight hundred thirty-two thousand, one hundred thirty-six".