2045320 has 16 divisors (see below), whose sum is σ = 4602060. Its totient is φ = 818112.

The previous prime is 2045317. The next prime is 2045333. The reversal of 2045320 is 235402.

It can be written as a sum of positive squares in 2 ways, for example, as 2010724 + 34596 = 1418^2 + 186^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2045294 and 2045303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25527 + ... + 25606.

2^2045320 is an apocalyptic number.

2045320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045320 is an abundant number, since it is smaller than the sum of its proper divisors (2556740).

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

2045320 is a wasteful number, since it uses less digits than its factorization.

2045320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51144 (or 51140 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2045320 is about 1430.1468456071. The cubic root of 2045320 is about 126.9366662947.

It can be divided in two parts, 20453 and 20, that multiplied together give a triangular number (409060 = T₉₀₄).

The spelling of 2045320 in words is "two million, forty-five thousand, three hundred twenty".