729470 has 32 divisors (see below), whose sum is σ = 1591488. Its totient is φ = 235008.

The previous prime is 729457. The next prime is 729473. The reversal of 729470 is 74927.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884 + ... + 1496.

It is an arithmetic number, because the mean of its divisors is an integer number (49734).

2⁷²⁹⁴⁷⁰ is an apocalyptic number.

729470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

729470 is an abundant number, since it is smaller than the sum of its proper divisors (862018).

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

729470 is a wasteful number, since it uses less digits than its factorization.

729470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 729470 is about 854.0901591752. The cubic root of 729470 is about 90.0193374087.

The spelling of 729470 in words is "seven hundred twenty-nine thousand, four hundred seventy".