810975396 has 144 divisors (see below), whose sum is σ = 2411841152. Its totient is φ = 207567360.

The previous prime is 810975379. The next prime is 810975397. The reversal of 810975396 is 693579018.

It is not an unprimeable number, because it can be changed into a prime (810975397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 741426 + ... + 742518.

Almost surely, 2^810975396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810975396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205920576).

810975396 is an abundant number, since it is smaller than the sum of its proper divisors (1600865756).

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

810975396 is a wasteful number, since it uses less digits than its factorization.

810975396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 810975396 is about 28477.6297468732. The cubic root of 810975396 is about 932.5437723321.

The spelling of 810975396 in words is "eight hundred ten million, nine hundred seventy-five thousand, three hundred ninety-six".