84078708 has 72 divisors (see below), whose sum is σ = 238174272. Its totient is φ = 22974336.

The previous prime is 84078703. The next prime is 84078721. The reversal of 84078708 is 80787048.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 84078708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84078703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10416 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (3307976).

Almost surely, 2^84078708 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 84078708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119087136).

84078708 is an abundant number, since it is smaller than the sum of its proper divisors (154095564).

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

84078708 is a wasteful number, since it uses less digits than its factorization.

84078708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261 (or 6252 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 84078708 is about 9169.4442579690. Note that the first 3 decimals coincide. The cubic root of 84078708 is about 438.0886582690.

The spelling of 84078708 in words is "eighty-four million, seventy-eight thousand, seven hundred eight".