729285732 has 72 divisors (see below), whose sum is σ = 2127355776. Its totient is φ = 206337024.

The previous prime is 729285731. The next prime is 729285769. The reversal of 729285732 is 237582927.

729285732 is a `hidden beast` number, since 72 + 9 + 2 + 8 + 573 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (729285731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11908 + ... + 40004.

It is an arithmetic number, because the mean of its divisors is an integer number (29546608).

Almost surely, 2^729285732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729285732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1063677888).

729285732 is an abundant number, since it is smaller than the sum of its proper divisors (1398070044).

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

729285732 is a wasteful number, since it uses less digits than its factorization.

729285732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28217 (or 28212 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 729285732 is about 27005.2908149496. The cubic root of 729285732 is about 900.1175698260.

The spelling of 729285732 in words is "seven hundred twenty-nine million, two hundred eighty-five thousand, seven hundred thirty-two".