729047322 has 24 divisors (see below), whose sum is σ = 1618131060. Its totient is φ = 237088320.

The previous prime is 729047303. The next prime is 729047381. The reversal of 729047322 is 223740927.

729047322 is a `hidden beast` number, since 7 + 290 + 47 + 322 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 716579361 + 12467961 = 26769^2 + 3531^2 .

It is a super-3 number, since 3×729047322³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 493197 + ... + 494672.

Almost surely, 2^729047322 is an apocalyptic number.

729047322 is an abundant number, since it is smaller than the sum of its proper divisors (889083738).

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

729047322 is a wasteful number, since it uses less digits than its factorization.

729047322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987918 (or 987915 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 729047322 is about 27000.8763191123. The cubic root of 729047322 is about 900.0194736527.

The spelling of 729047322 in words is "seven hundred twenty-nine million, forty-seven thousand, three hundred twenty-two".