2045870 has 8 divisors (see below), whose sum is σ = 3682584. Its totient is φ = 818344.

The previous prime is 2045851. The next prime is 2045881. The reversal of 2045870 is 785402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102284 + ... + 102303.

It is an arithmetic number, because the mean of its divisors is an integer number (460323).

2^2045870 is an apocalyptic number.

2045870 is a deficient number, since it is larger than the sum of its proper divisors (1636714).

2045870 is a wasteful number, since it uses less digits than its factorization.

2045870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204594.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2045870 is about 1430.3391206284. The cubic root of 2045870 is about 126.9480433098.

The spelling of 2045870 in words is "two million, forty-five thousand, eight hundred seventy".