805018872 has 32 divisors (see below), whose sum is σ = 2300054400. Its totient is φ = 230005344.

The previous prime is 805018871. The next prime is 805018873. The reversal of 805018872 is 278810508.

It is an interprime number because it is at equal distance from previous prime (805018871) and next prime (805018873).

It is a super-3 number, since 3×805018872³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 805018872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805018871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2395722 + ... + 2396057.

It is an arithmetic number, because the mean of its divisors is an integer number (71876700).

Almost surely, 2^805018872 is an apocalyptic number.

It is an amenable number.

805018872 is an abundant number, since it is smaller than the sum of its proper divisors (1495035528).

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

805018872 is a wasteful number, since it uses less digits than its factorization.

805018872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791795 (or 4791791 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 805018872 is about 28372.8544915735. The cubic root of 805018872 is about 930.2550162025.

The spelling of 805018872 in words is "eight hundred five million, eighteen thousand, eight hundred seventy-two".