800045872 has 20 divisors (see below), whose sum is σ = 1550589496. Its totient is φ = 399893760.

The previous prime is 800045849. The next prime is 800045879. The reversal of 800045872 is 278540008.

It is not an unprimeable number, because it can be changed into a prime (800045879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60847 + ... + 72817.

Almost surely, 2^800045872 is an apocalyptic number.

It is an amenable number.

800045872 is a deficient number, since it is larger than the sum of its proper divisors (750543624).

800045872 is a wasteful number, since it uses less digits than its factorization.

800045872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16156 (or 16150 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 800045872 is about 28285.0821458945. The cubic root of 800045872 is about 928.3355096303.

The spelling of 800045872 in words is "eight hundred million, forty-five thousand, eight hundred seventy-two".