2045290 has 16 divisors (see below), whose sum is σ = 3964968. Its totient is φ = 755136.

The previous prime is 2045213. The next prime is 2045311. The reversal of 2045290 is 925402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 815409 + 1229881 = 903^2 + 1109^2 .

It is a super-2 number, since 2×2045290² = 8366422368200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7737 + ... + 7996.

2^2045290 is an apocalyptic number.

2045290 is a deficient number, since it is larger than the sum of its proper divisors (1919678).

2045290 is a wasteful number, since it uses less digits than its factorization.

2045290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15753.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2045290 is about 1430.1363571352. The cubic root of 2045290 is about 126.9360456716.

The spelling of 2045290 in words is "two million, forty-five thousand, two hundred ninety".