29689420672 has 32 divisors (see below), whose sum is σ = 62259892200. Its totient is φ = 14063408640.

The previous prime is 29689420639. The next prime is 29689420679. The reversal of 29689420672 is 27602498692.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29689420679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6101479 + ... + 6106342.

Almost surely, 2^29689420672 is an apocalyptic number.

It is an amenable number.

29689420672 is an abundant number, since it is smaller than the sum of its proper divisors (32570471528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29689420672 is a wasteful number, since it uses less digits than its factorization.

29689420672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12207854 (or 12207842 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 29689420672 in words is "twenty-nine billion, six hundred eighty-nine million, four hundred twenty thousand, six hundred seventy-two".