810229140 has 72 divisors (see below), whose sum is σ = 2808798720. Its totient is φ = 185194944.

The previous prime is 810229127. The next prime is 810229183. The reversal of 810229140 is 41922018.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 320260 + ... + 322779.

Almost surely, 2^810229140 is an apocalyptic number.

It is an amenable number.

810229140 is an abundant number, since it is smaller than the sum of its proper divisors (1998569580).

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

810229140 is a wasteful number, since it uses less digits than its factorization.

810229140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643061 (or 643056 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 810229140 is about 28464.5242363191. The cubic root of 810229140 is about 932.2576436539.

The spelling of 810229140 in words is "eight hundred ten million, two hundred twenty-nine thousand, one hundred forty".