729654507820 has 48 divisors (see below), whose sum is σ = 1751276374848. Its totient is φ = 250152180480.

The previous prime is 729654507793. The next prime is 729654507889. The reversal of 729654507820 is 28705456927.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2311930 + ... + 2608510.

It is an arithmetic number, because the mean of its divisors is an integer number (36484924476).

Almost surely, 2^729654507820 is an apocalyptic number.

729654507820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

729654507820 is an abundant number, since it is smaller than the sum of its proper divisors (1021621867028).

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

729654507820 is a wasteful number, since it uses less digits than its factorization.

729654507820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314170 (or 314168 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 729654507820 in words is "seven hundred twenty-nine billion, six hundred fifty-four million, five hundred seven thousand, eight hundred twenty".