84706380 has 144 divisors (see below), whose sum is σ = 283046400. Its totient is φ = 20334720.

The previous prime is 84706379. The next prime is 84706381. The reversal of 84706380 is 8360748.

84706380 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (84706379) and next prime (84706381).

It is a Harshad number since it is a multiple of its sum of digits (36).

84706380 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (84706381) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 354301 + ... + 354539.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^84706380 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 84706380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141523200).

84706380 is an abundant number, since it is smaller than the sum of its proper divisors (198340020).

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

84706380 is a wasteful number, since it uses less digits than its factorization.

84706380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 84706380 is about 9203.6069016446. The cubic root of 84706380 is about 439.1761097619.

The spelling of 84706380 in words is "eighty-four million, seven hundred six thousand, three hundred eighty".