729820390 has 32 divisors (see below), whose sum is σ = 1417409280. Its totient is φ = 268961664.

The previous prime is 729820373. The next prime is 729820391. The reversal of 729820390 is 93028927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729820391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67371 + ... + 77449.

It is an arithmetic number, because the mean of its divisors is an integer number (44294040).

Almost surely, 2^729820390 is an apocalyptic number.

729820390 is a deficient number, since it is larger than the sum of its proper divisors (687588890).

729820390 is a wasteful number, since it uses less digits than its factorization.

729820390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10656.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 729820390 is about 27015.1881355655. The cubic root of 729820390 is about 900.3374824883.

The spelling of 729820390 in words is "seven hundred twenty-nine million, eight hundred twenty thousand, three hundred ninety".