84520900 has 18 divisors (see below), whose sum is σ = 183410570. Its totient is φ = 33808320.

The previous prime is 84520867. The next prime is 84520901. The reversal of 84520900 is 902548.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1382976 + 83137924 = 1176^2 + 9118^2 .

It is not an unprimeable number, because it can be changed into a prime (84520901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422505 + ... + 422704.

Almost surely, 2^84520900 is an apocalyptic number.

It is an amenable number.

84520900 is an abundant number, since it is smaller than the sum of its proper divisors (98889670).

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

84520900 is a wasteful number, since it uses less digits than its factorization.

84520900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845223 (or 845216 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 84520900 is about 9193.5248952728. The cubic root of 84520900 is about 438.8553235619.

The spelling of 84520900 in words is "eighty-four million, five hundred twenty thousand, nine hundred".