729449120 has 48 divisors (see below), whose sum is σ = 1727467560. Its totient is φ = 291078144.

The previous prime is 729449099. The next prime is 729449131. The reversal of 729449120 is 21944927.

It can be written as a sum of positive squares in 4 ways, for example, as 549996304 + 179452816 = 23452^2 + 13396^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64016 + ... + 74544.

Almost surely, 2^729449120 is an apocalyptic number.

It is an amenable number.

729449120 is an abundant number, since it is smaller than the sum of its proper divisors (998018440).

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

729449120 is a wasteful number, since it uses less digits than its factorization.

729449120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10977 (or 10969 counting only the distinct ones).

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

The square root of 729449120 is about 27008.3157564480. The cubic root of 729449120 is about 900.1847851032.

The spelling of 729449120 in words is "seven hundred twenty-nine million, four hundred forty-nine thousand, one hundred twenty".