8105490 has 48 divisors (see below), whose sum is σ = 21287448. Its totient is φ = 2139648.

The previous prime is 8105483. The next prime is 8105491. The reversal of 8105490 is 945018.

It can be written as a sum of positive squares in 4 ways, for example, as 3956121 + 4149369 = 1989^2 + 2037^2 .

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8105491) 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 23 ways as a sum of consecutive naturals, for example, 9772 + ... + 10568.

Almost surely, 2^8105490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8105490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10643724).

8105490 is an abundant number, since it is smaller than the sum of its proper divisors (13181958).

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

8105490 is a wasteful number, since it uses less digits than its factorization.

8105490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8105490 is about 2847.0142254650. The cubic root of 8105490 is about 200.8752474554.

The spelling of 8105490 in words is "eight million, one hundred five thousand, four hundred ninety".