729881424 has 60 divisors (see below), whose sum is σ = 2086134336. Its totient is φ = 238115136.

The previous prime is 729881423. The next prime is 729881431. The reversal of 729881424 is 424188927.

It is a self number, because there is not a number n which added to its sum of digits gives 729881424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729881423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47154 + ... + 60689.

Almost surely, 2^729881424 is an apocalyptic number.

It is an amenable number.

729881424 is an abundant number, since it is smaller than the sum of its proper divisors (1356252912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

729881424 is a wasteful number, since it uses less digits than its factorization.

729881424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107904 (or 107895 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 729881424 is about 27016.3177357685. The cubic root of 729881424 is about 900.3625798350.

The spelling of 729881424 in words is "seven hundred twenty-nine million, eight hundred eighty-one thousand, four hundred twenty-four".