729220020 has 48 divisors (see below), whose sum is σ = 2046159360. Its totient is φ = 194045056.

The previous prime is 729220003. The next prime is 729220061. The reversal of 729220020 is 20022927.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16054 + ... + 41426.

It is an arithmetic number, because the mean of its divisors is an integer number (42628320).

Almost surely, 2^729220020 is an apocalyptic number.

It is an amenable number.

729220020 is an abundant number, since it is smaller than the sum of its proper divisors (1316939340).

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

729220020 is a wasteful number, since it uses less digits than its factorization.

729220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25864 (or 25862 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 729220020 is about 27004.0741370631. The cubic root of 729220020 is about 900.0905341024.

Adding to 729220020 its reverse (20022927), we get a palindrome (749242947).

The spelling of 729220020 in words is "seven hundred twenty-nine million, two hundred twenty thousand, twenty".