810888012 has 72 divisors (see below), whose sum is σ = 2239211520. Its totient is φ = 245380320.

The previous prime is 810888011. The next prime is 810888031. The reversal of 810888012 is 210888018.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (810888011) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 562789 + ... + 564227.

It is an arithmetic number, because the mean of its divisors is an integer number (31100160).

Almost surely, 2^810888012 is an apocalyptic number.

It is an amenable number.

810888012 is an abundant number, since it is smaller than the sum of its proper divisors (1428323508).

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

810888012 is a wasteful number, since it uses less digits than its factorization.

810888012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883 (or 2878 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 810888012 is about 28476.0954486390. The cubic root of 810888012 is about 932.5102767281.

The spelling of 810888012 in words is "eight hundred ten million, eight hundred eighty-eight thousand, twelve".