810722130 has 16 divisors (see below), whose sum is σ = 1945733184. Its totient is φ = 216192560.

The previous prime is 810722123. The next prime is 810722131. The reversal of 810722130 is 31227018.

It is a self number, because there is not a number n which added to its sum of digits gives 810722130.

It is not an unprimeable number, because it can be changed into a prime (810722131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13512006 + ... + 13512065.

It is an arithmetic number, because the mean of its divisors is an integer number (121608324).

Almost surely, 2^810722130 is an apocalyptic number.

810722130 is an abundant number, since it is smaller than the sum of its proper divisors (1135011054).

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

810722130 is a wasteful number, since it uses less digits than its factorization.

810722130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27024081.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 810722130 is about 28473.1826461321. The cubic root of 810722130 is about 932.4466850375.

Adding to 810722130 its reverse (31227018), we get a palindrome (841949148).

The spelling of 810722130 in words is "eight hundred ten million, seven hundred twenty-two thousand, one hundred thirty".