728812629 has 12 divisors (see below), whose sum is σ = 1053175500. Its totient is φ = 485669184.

The previous prime is 728812619. The next prime is 728812649. The reversal of 728812629 is 926218827.

728812629 is a `hidden beast` number, since 7 + 2 + 8 + 8 + 12 + 629 = 666.

728812629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 458045604 + 270767025 = 21402^2 + 16455^2 .

It is not a de Polignac number, because 728812629 - 2⁴ = 728812613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728812619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7057 + ... + 38825.

It is an arithmetic number, because the mean of its divisors is an integer number (87764625).

Almost surely, 2^728812629 is an apocalyptic number.

It is an amenable number.

728812629 is a deficient number, since it is larger than the sum of its proper divisors (324362871).

728812629 is a wasteful number, since it uses less digits than its factorization.

728812629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34324 (or 34321 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 728812629 is about 26996.5299436798. The cubic root of 728812629 is about 899.9228859855.

The spelling of 728812629 in words is "seven hundred twenty-eight million, eight hundred twelve thousand, six hundred twenty-nine".