729811722 has 16 divisors (see below), whose sum is σ = 1462754592. Its totient is φ = 242748720.

The previous prime is 729811721. The next prime is 729811727. The reversal of 729811722 is 227118927.

It is not an unprimeable number, because it can be changed into a prime (729811721) 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, 127429 + ... + 133032.

It is an arithmetic number, because the mean of its divisors is an integer number (91422162).

Almost surely, 2^729811722 is an apocalyptic number.

729811722 is an abundant number, since it is smaller than the sum of its proper divisors (732942870).

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

729811722 is a wasteful number, since it uses less digits than its factorization.

729811722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260933.

The product of its digits is 28224, while the sum is 39.

The square root of 729811722 is about 27015.0277068153. The cubic root of 729811722 is about 900.3339180697. Note that the first 3 decimals are identical.

The spelling of 729811722 in words is "seven hundred twenty-nine million, eight hundred eleven thousand, seven hundred twenty-two".