729737032 has 8 divisors (see below), whose sum is σ = 1368256950. Its totient is φ = 364868512.

The previous prime is 729737023. The next prime is 729737033. The reversal of 729737032 is 230737927.

It can be written as a sum of positive squares in only one way, i.e., 572836356 + 156900676 = 23934^2 + 12526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×729737032² = 1065032271744338048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (729737033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45608557 + ... + 45608572.

Almost surely, 2^729737032 is an apocalyptic number.

It is an amenable number.

729737032 is a deficient number, since it is larger than the sum of its proper divisors (638519918).

729737032 is a wasteful number, since it uses less digits than its factorization.

729737032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91217135 (or 91217131 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 729737032 is about 27013.6452927035. The cubic root of 729737032 is about 900.3032031915.

The spelling of 729737032 in words is "seven hundred twenty-nine million, seven hundred thirty-seven thousand, thirty-two".