29657856628 has 24 divisors (see below), whose sum is σ = 53136325088. Its totient is φ = 14476414176.

The previous prime is 29657856593. The next prime is 29657856647. The reversal of 29657856628 is 82665875692.

It is a self number, because there is not a number n which added to its sum of digits gives 29657856628.

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, 287875 + ... + 377077.

Almost surely, 2^29657856628 is an apocalyptic number.

It is an amenable number.

29657856628 is a deficient number, since it is larger than the sum of its proper divisors (23478468460).

29657856628 is a wasteful number, since it uses less digits than its factorization.

29657856628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91183 (or 91181 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 64.

The spelling of 29657856628 in words is "twenty-nine billion, six hundred fifty-seven million, eight hundred fifty-six thousand, six hundred twenty-eight".