810169420 has 12 divisors (see below), whose sum is σ = 1701355824. Its totient is φ = 324067760.

The previous prime is 810169361. The next prime is 810169421. The reversal of 810169420 is 24961018.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (810169421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20254216 + ... + 20254255.

It is an arithmetic number, because the mean of its divisors is an integer number (141779652).

Almost surely, 2^810169420 is an apocalyptic number.

It is an amenable number.

810169420 is an abundant number, since it is smaller than the sum of its proper divisors (891186404).

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

810169420 is a wasteful number, since it uses less digits than its factorization.

810169420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40508480 (or 40508478 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 810169420 is about 28463.4751919016. The cubic root of 810169420 is about 932.2347382840.

The spelling of 810169420 in words is "eight hundred ten million, one hundred sixty-nine thousand, four hundred twenty".