809152722 has 96 divisors (see below), whose sum is σ = 2083910400. Its totient is φ = 222009984.

The previous prime is 809152711. The next prime is 809152759. The reversal of 809152722 is 227251908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 836283 + ... + 837249.

It is an arithmetic number, because the mean of its divisors is an integer number (21707400).

Almost surely, 2^809152722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 809152722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041955200).

809152722 is an abundant number, since it is smaller than the sum of its proper divisors (1274757678).

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

809152722 is a wasteful number, since it uses less digits than its factorization.

809152722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 809152722 is about 28445.6098897528. The cubic root of 809152722 is about 931.8446149679.

The spelling of 809152722 in words is "eight hundred nine million, one hundred fifty-two thousand, seven hundred twenty-two".