729174428 has 24 divisors (see below), whose sum is σ = 1338923040. Its totient is φ = 346800960.

The previous prime is 729174379. The next prime is 729174431. The reversal of 729174428 is 824471927.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5243 + ... + 38546.

It is an arithmetic number, because the mean of its divisors is an integer number (55788460).

Almost surely, 2^729174428 is an apocalyptic number.

It is an amenable number.

729174428 is a deficient number, since it is larger than the sum of its proper divisors (609748612).

729174428 is a wasteful number, since it uses less digits than its factorization.

729174428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43997 (or 43995 counting only the distinct ones).

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

The square root of 729174428 is about 27003.2299549517. The cubic root of 729174428 is about 900.0717753457.

The spelling of 729174428 in words is "seven hundred twenty-nine million, one hundred seventy-four thousand, four hundred twenty-eight".