729636512 has 24 divisors (see below), whose sum is σ = 1567060992. Its totient is φ = 331652800.

The previous prime is 729636503. The next prime is 729636547. The reversal of 729636512 is 215636927.

It is a super-2 number, since 2×729636512² = 1064738879287052288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 729636512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036064 + ... + 1036767.

It is an arithmetic number, because the mean of its divisors is an integer number (65294208).

Almost surely, 2^729636512 is an apocalyptic number.

It is an amenable number.

729636512 is an abundant number, since it is smaller than the sum of its proper divisors (837424480).

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

729636512 is a wasteful number, since it uses less digits than its factorization.

729636512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072852 (or 2072844 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 729636512 is about 27011.7846874286. The cubic root of 729636512 is about 900.2618628960.

The spelling of 729636512 in words is "seven hundred twenty-nine million, six hundred thirty-six thousand, five hundred twelve".