84520000 has 70 divisors (see below), whose sum is σ = 209681318. Its totient is φ = 33792000.

The previous prime is 84519997. The next prime is 84520003. The reversal of 84520000 is 2548.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84519997) and next prime (84520003).

It can be written as a sum of positive squares in 5 ways, for example, as 63872064 + 20647936 = 7992^2 + 4544^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84520000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84520003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38944 + ... + 41056.

Almost surely, 2^84520000 is an apocalyptic number.

84520000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104840659).

84520000 is an abundant number, since it is smaller than the sum of its proper divisors (125161318).

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

84520000 is an equidigital number, since it uses as much as digits as its factorization.

84520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 84520000 is about 9193.4759476490. The cubic root of 84520000 is about 438.8537658754.

Adding to 84520000 its reverse (2548), we get a palindrome (84522548).

The spelling of 84520000 in words is "eighty-four million, five hundred twenty thousand".