729144872 has 8 divisors (see below), whose sum is σ = 1367146650. Its totient is φ = 364572432.

The previous prime is 729144869. The next prime is 729144907. The reversal of 729144872 is 278441927.

It can be written as a sum of positive squares in only one way, i.e., 525968356 + 203176516 = 22934^2 + 14254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 45571547 + ... + 45571562.

Almost surely, 2^729144872 is an apocalyptic number.

It is an amenable number.

729144872 is a deficient number, since it is larger than the sum of its proper divisors (638001778).

729144872 is a wasteful number, since it uses less digits than its factorization.

729144872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91143115 (or 91143111 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 729144872 is about 27002.6826815411. The cubic root of 729144872 is about 900.0596141582.

The spelling of 729144872 in words is "seven hundred twenty-nine million, one hundred forty-four thousand, eight hundred seventy-two".