728929323 has 24 divisors (see below), whose sum is σ = 1070269200. Its totient is φ = 477987840.

The previous prime is 728929277. The next prime is 728929339. The reversal of 728929323 is 323929827.

728929323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728929323 - 2⁶ = 728929259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728929343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178003 + ... + 182051.

It is an arithmetic number, because the mean of its divisors is an integer number (44594550).

Almost surely, 2^728929323 is an apocalyptic number.

728929323 is a deficient number, since it is larger than the sum of its proper divisors (341339877).

728929323 is a wasteful number, since it uses less digits than its factorization.

728929323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379 (or 4376 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 728929323 is about 26998.6911349421. The cubic root of 728929323 is about 899.9709138748.

It can be divided in two parts, 72892 and 9323, that added together give a triangular number (82215 = T₄₀₅).

The spelling of 728929323 in words is "seven hundred twenty-eight million, nine hundred twenty-nine thousand, three hundred twenty-three".