729426 has 8 divisors (see below), whose sum is σ = 1458864. Its totient is φ = 243140.

The previous prime is 729413. The next prime is 729451. The reversal of 729426 is 624927.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

729426 is an admirable number.

It is a d-powerful number, because it can be written as 7² + 2⁵ + 4⁸ + 9⁶ + 2¹⁷ + 6⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 729393 and 729402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60780 + ... + 60791.

It is an arithmetic number, because the mean of its divisors is an integer number (182358).

2⁷²⁹⁴²⁶ is an apocalyptic number.

729426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

729426 is a wasteful number, since it uses less digits than its factorization.

729426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121576.

The product of its digits is 6048, while the sum is 30.

The square root of 729426 is about 854.0644003821. The cubic root of 729426 is about 90.0175274505.

The spelling of 729426 in words is "seven hundred twenty-nine thousand, four hundred twenty-six".