729213320 has 32 divisors (see below), whose sum is σ = 1789888320. Its totient is φ = 265168320.

The previous prime is 729213313. The next prime is 729213409. The reversal of 729213320 is 23312927.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828212 + ... + 829091.

It is an arithmetic number, because the mean of its divisors is an integer number (55934010).

Almost surely, 2^729213320 is an apocalyptic number.

It is an amenable number.

729213320 is an abundant number, since it is smaller than the sum of its proper divisors (1060675000).

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

729213320 is a wasteful number, since it uses less digits than its factorization.

729213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657325 (or 1657321 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 729213320 is about 27003.9500814233. The cubic root of 729213320 is about 900.0877774470.

The spelling of 729213320 in words is "seven hundred twenty-nine million, two hundred thirteen thousand, three hundred twenty".