84747030 has 64 divisors (see below), whose sum is σ = 215688960. Its totient is φ = 21250944.

The previous prime is 84747017. The next prime is 84747031. The reversal of 84747030 is 3074748.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 84746982 and 84747000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84747031) 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 31 ways as a sum of consecutive naturals, for example, 89017 + ... + 89963.

It is an arithmetic number, because the mean of its divisors is an integer number (3370140).

Almost surely, 2^84747030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84747030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107844480).

84747030 is an abundant number, since it is smaller than the sum of its proper divisors (130941930).

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

84747030 is a wasteful number, since it uses less digits than its factorization.

84747030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 84747030 is about 9205.8150100901. The cubic root of 84747030 is about 439.2463510426.

The spelling of 84747030 in words is "eighty-four million, seven hundred forty-seven thousand, thirty".