728436429 has 32 divisors (see below), whose sum is σ = 1235370240. Its totient is φ = 415561536.

The previous prime is 728436391. The next prime is 728436433. The reversal of 728436429 is 924634827.

728436429 is a `hidden beast` number, since 7 + 284 + 364 + 2 + 9 = 666.

It is not a de Polignac number, because 728436429 - 2⁷ = 728436301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728436629) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 125107 + ... + 130799.

It is an arithmetic number, because the mean of its divisors is an integer number (38605320).

Almost surely, 2^728436429 is an apocalyptic number.

It is an amenable number.

728436429 is a deficient number, since it is larger than the sum of its proper divisors (506933811).

728436429 is a wasteful number, since it uses less digits than its factorization.

728436429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386 (or 6380 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 728436429 is about 26989.5614821731. The cubic root of 728436429 is about 899.7680179877.

The spelling of 728436429 in words is "seven hundred twenty-eight million, four hundred thirty-six thousand, four hundred twenty-nine".