729721244 has 48 divisors (see below), whose sum is σ = 1484904960. Its totient is φ = 307312320.

The previous prime is 729721211. The next prime is 729721261. The reversal of 729721244 is 442127927.

It is a junction number, because it is equal to n+sod(n) for n = 729721198 and 729721207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106987 + ... + 1107645.

It is an arithmetic number, because the mean of its divisors is an integer number (30935520).

Almost surely, 2^729721244 is an apocalyptic number.

It is an amenable number.

729721244 is an abundant number, since it is smaller than the sum of its proper divisors (755183716).

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

729721244 is a wasteful number, since it uses less digits than its factorization.

729721244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1296 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 729721244 is about 27013.3530684364. The cubic root of 729721244 is about 900.2967104007.

The spelling of 729721244 in words is "seven hundred twenty-nine million, seven hundred twenty-one thousand, two hundred forty-four".