2045872 has 10 divisors (see below), whose sum is σ = 3963908. Its totient is φ = 1022928.

The previous prime is 2045851. The next prime is 2045881. The reversal of 2045872 is 2785402.

It is a self number, because there is not a number n which added to its sum of digits gives 2045872.

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 as a sum of consecutive naturals, namely, 63918 + ... + 63949.

2^2045872 is an apocalyptic number.

It is an amenable number.

2045872 is a deficient number, since it is larger than the sum of its proper divisors (1918036).

2045872 is a wasteful number, since it uses less digits than its factorization.

2045872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127875 (or 127869 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2045872 is about 1430.3398197631. The cubic root of 2045872 is about 126.9480846771.

The spelling of 2045872 in words is "two million, forty-five thousand, eight hundred seventy-two".