810900940 has 48 divisors (see below), whose sum is σ = 1733659200. Its totient is φ = 318536960.

The previous prime is 810900907. The next prime is 810900941. The reversal of 810900940 is 49009018.

810900940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (810900941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415086 + ... + 417034.

It is an arithmetic number, because the mean of its divisors is an integer number (36117900).

Almost surely, 2^810900940 is an apocalyptic number.

It is an amenable number.

810900940 is an abundant number, since it is smaller than the sum of its proper divisors (922758260).

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

810900940 is a wasteful number, since it uses less digits than its factorization.

810900940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 810900940 is about 28476.3224451473. The cubic root of 810900940 is about 932.5152323770.

Adding to 810900940 its reverse (49009018), we get a palindrome (859909958).

The spelling of 810900940 in words is "eight hundred ten million, nine hundred thousand, nine hundred forty".