729142616 has 8 divisors (see below), whose sum is σ = 1367142420. Its totient is φ = 364571304.

The previous prime is 729142559. The next prime is 729142627. The reversal of 729142616 is 616241927.

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

It is a super-3 number, since 3×729142616³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 729142616.

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, 45571406 + ... + 45571421.

Almost surely, 2^729142616 is an apocalyptic number.

It is an amenable number.

729142616 is a deficient number, since it is larger than the sum of its proper divisors (637999804).

729142616 is a wasteful number, since it uses less digits than its factorization.

729142616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91142833 (or 91142829 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 729142616 is about 27002.6409078816. The cubic root of 729142616 is about 900.0586858851.

Subtracting from 729142616 its sum of digits (38), we obtain a triangular number (729142578 = T₃₈₁₈₇).

The spelling of 729142616 in words is "seven hundred twenty-nine million, one hundred forty-two thousand, six hundred sixteen".