2305090 has 16 divisors (see below), whose sum is σ = 4167288. Its totient is φ = 918016.

The previous prime is 2305049. The next prime is 2305091. The reversal of 2305090 is 905032.

It can be written as a sum of positive squares in 4 ways, for example, as 1456849 + 848241 = 1207^2 + 921^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2305091) 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, 3204 + ... + 3856.

2^2305090 is an apocalyptic number.

2305090 is a deficient number, since it is larger than the sum of its proper divisors (1862198).

2305090 is a wasteful number, since it uses less digits than its factorization.

2305090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 2305090 is about 1518.2522847011. The cubic root of 2305090 is about 132.0979148012.

The spelling of 2305090 in words is "two million, three hundred five thousand, ninety".