8205090 has 16 divisors (see below), whose sum is σ = 19692288. Its totient is φ = 2188016.

The previous prime is 8205079. The next prime is 8205097. The reversal of 8205090 is 905028.

It is a self number, because there is not a number n which added to its sum of digits gives 8205090.

It is not an unprimeable number, because it can be changed into a prime (8205097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136722 + ... + 136781.

It is an arithmetic number, because the mean of its divisors is an integer number (1230768).

Almost surely, 2^8205090 is an apocalyptic number.

8205090 is an abundant number, since it is smaller than the sum of its proper divisors (11487198).

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

8205090 is a wasteful number, since it uses less digits than its factorization.

8205090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273513.

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

The square root of 8205090 is about 2864.4528273302. The cubic root of 8205090 is about 201.6946830219.

The spelling of 8205090 in words is "eight million, two hundred five thousand, ninety".