729708632 has 8 divisors (see below), whose sum is σ = 1368203700. Its totient is φ = 364854312.

The previous prime is 729708619. The next prime is 729708641. The reversal of 729708632 is 236807927.

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

It is a super-2 number, since 2×729708632² = 1064949375230622848, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 45606782 + ... + 45606797.

Almost surely, 2^729708632 is an apocalyptic number.

It is an amenable number.

729708632 is a deficient number, since it is larger than the sum of its proper divisors (638495068).

729708632 is a wasteful number, since it uses less digits than its factorization.

729708632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91213585 (or 91213581 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 729708632 is about 27013.1196273218. The cubic root of 729708632 is about 900.2915236679.

The spelling of 729708632 in words is "seven hundred twenty-nine million, seven hundred eight thousand, six hundred thirty-two".