729422 has 16 divisors (see below), whose sum is σ = 1160352. Its totient is φ = 343200.

The previous prime is 729413. The next prime is 729451. The reversal of 729422 is 224927.

It is a junction number, because it is equal to n+sod(n) for n = 729391 and 729400.

It is a congruent number.

It is an unprimeable number.

729422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4568 + ... + 4724.

It is an arithmetic number, because the mean of its divisors is an integer number (72522).

2⁷²⁹⁴²² is an apocalyptic number.

729422 is a deficient number, since it is larger than the sum of its proper divisors (430930).

729422 is a wasteful number, since it uses less digits than its factorization.

729422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its digits is 2016, while the sum is 26.

The square root of 729422 is about 854.0620586351. The cubic root of 729422 is about 90.0173629053.

The spelling of 729422 in words is "seven hundred twenty-nine thousand, four hundred twenty-two".