729990 has 24 divisors (see below), whose sum is σ = 1898208. Its totient is φ = 194640.

The previous prime is 729979. The next prime is 729991. The reversal of 729990 is 99927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3966 + ... + 4145.

It is an arithmetic number, because the mean of its divisors is an integer number (79092).

2⁷²⁹⁹⁹⁰ is an apocalyptic number.

729990 is an abundant number, since it is smaller than the sum of its proper divisors (1168218).

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

729990 is a wasteful number, since it uses less digits than its factorization.

729990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124 (or 8121 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 729990 is about 854.3945224544. The cubic root of 729990 is about 90.0407223123.

The spelling of 729990 in words is "seven hundred twenty-nine thousand, nine hundred ninety".