729641408 has 28 divisors (see below), whose sum is σ = 1455904632. Its totient is φ = 362799360.

The previous prime is 729641383. The next prime is 729641413. The reversal of 729641408 is 804146927.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19910 + ... + 43077.

It is an arithmetic number, because the mean of its divisors is an integer number (51996594).

Almost surely, 2^729641408 is an apocalyptic number.

It is an amenable number.

729641408 is a deficient number, since it is larger than the sum of its proper divisors (726263224).

729641408 is a wasteful number, since it uses less digits than its factorization.

729641408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63180 (or 63170 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 729641408 is about 27011.8753143872. The cubic root of 729641408 is about 900.2638765343.

The spelling of 729641408 in words is "seven hundred twenty-nine million, six hundred forty-one thousand, four hundred eight".