8520090 has 16 divisors (see below), whose sum is σ = 20448288. Its totient is φ = 2272016.

The previous prime is 8520079. The next prime is 8520091. The reversal of 8520090 is 900258.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8520090.

It is not an unprimeable number, because it can be changed into a prime (8520091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141972 + ... + 142031.

It is an arithmetic number, because the mean of its divisors is an integer number (1278018).

Almost surely, 2^8520090 is an apocalyptic number.

8520090 is an abundant number, since it is smaller than the sum of its proper divisors (11928198).

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

8520090 is a wasteful number, since it uses less digits than its factorization.

8520090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284013.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 8520090 is about 2918.9193205705. The cubic root of 8520090 is about 204.2434137865.

The spelling of 8520090 in words is "eight million, five hundred twenty thousand, ninety".