729805790 has 16 divisors (see below), whose sum is σ = 1501314912. Its totient is φ = 250219104.

The previous prime is 729805771. The next prime is 729805799. The reversal of 729805790 is 97508927.

It is a super-2 number, since 2×729805790² = 1065232982235048200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729805799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5212829 + ... + 5212968.

It is an arithmetic number, because the mean of its divisors is an integer number (93832182).

Almost surely, 2^729805790 is an apocalyptic number.

729805790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

729805790 is an abundant number, since it is smaller than the sum of its proper divisors (771509122).

729805790 is a wasteful number, since it uses less digits than its factorization.

729805790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10425811.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 729805790 is about 27014.9179158479. The cubic root of 729805790 is about 900.3314787212.

The spelling of 729805790 in words is "seven hundred twenty-nine million, eight hundred five thousand, seven hundred ninety".