810381340 has 48 divisors (see below), whose sum is σ = 1746763200. Its totient is φ = 315694080.

The previous prime is 810381337. The next prime is 810381353. The reversal of 810381340 is 43183018.

It is a junction number, because it is equal to n+sod(n) for n = 810381299 and 810381308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122436 + ... + 128884.

It is an arithmetic number, because the mean of its divisors is an integer number (36390900).

Almost surely, 2^810381340 is an apocalyptic number.

It is an amenable number.

810381340 is an abundant number, since it is smaller than the sum of its proper divisors (936381860).

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

810381340 is a wasteful number, since it uses less digits than its factorization.

810381340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622 (or 6620 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 810381340 is about 28467.1976140961. The cubic root of 810381340 is about 932.3160142731.

The spelling of 810381340 in words is "eight hundred ten million, three hundred eighty-one thousand, three hundred forty".