729156572 has 24 divisors (see below), whose sum is σ = 1290883440. Its totient is φ = 360345600.

The previous prime is 729156523. The next prime is 729156583. The reversal of 729156572 is 275651927.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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 in 7 ways as a sum of consecutive naturals, for example, 309503 + ... + 311849.

It is an arithmetic number, because the mean of its divisors is an integer number (53786810).

Almost surely, 2^729156572 is an apocalyptic number.

It is an amenable number.

729156572 is a deficient number, since it is larger than the sum of its proper divisors (561726868).

729156572 is a wasteful number, since it uses less digits than its factorization.

729156572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221 (or 3219 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The square root of 729156572 is about 27002.8993258131. The cubic root of 729156572 is about 900.0644283095.

The spelling of 729156572 in words is "seven hundred twenty-nine million, one hundred fifty-six thousand, five hundred seventy-two".