629728809634 has 32 divisors (see below), whose sum is σ = 982622171520. Its totient is φ = 302453088000.

The previous prime is 629728809623. The next prime is 629728809709. The reversal of 629728809634 is 436908827926.

It is a super-2 number, since 2×629728809634² (a number of 24 digits) contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 2319912 + ... + 2577100.

It is an arithmetic number, because the mean of its divisors is an integer number (30706942860).

Almost surely, 2^629728809634 is an apocalyptic number.

629728809634 is a deficient number, since it is larger than the sum of its proper divisors (352893361886).

629728809634 is a wasteful number, since it uses less digits than its factorization.

629728809634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257706.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 629728809634 in words is "six hundred twenty-nine billion, seven hundred twenty-eight million, eight hundred nine thousand, six hundred thirty-four".