2259090 has 40 divisors (see below), whose sum is σ = 6076620. Its totient is φ = 602208.

The previous prime is 2259053. The next prime is 2259097. The reversal of 2259090 is 909522.

It can be written as a sum of positive squares in 2 ways, for example, as 2259009 + 81 = 1503^2 + 9^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2259097) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 585 + ... + 2204.

2^2259090 is an apocalyptic number.

2259090 is an abundant number, since it is smaller than the sum of its proper divisors (3817530).

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

2259090 is a wasteful number, since it uses less digits than its factorization.

2259090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 2259090 is about 1503.0269458662. The cubic root of 2259090 is about 131.2132958591.

The spelling of 2259090 in words is "two million, two hundred fifty-nine thousand, ninety".