29686686832 has 40 divisors (see below), whose sum is σ = 66437859312. Its totient is φ = 12700185600.

The previous prime is 29686686787. The next prime is 29686686833. The reversal of 29686686832 is 23868668692.

It is a super-2 number, since 2×29686686832² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29686686833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4958019 + ... + 4964002.

Almost surely, 2^29686686832 is an apocalyptic number.

29686686832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

29686686832 is an abundant number, since it is smaller than the sum of its proper divisors (36751172480).

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

29686686832 is a wasteful number, since it uses less digits than its factorization.

29686686832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9922057 (or 9922051 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 64.

The spelling of 29686686832 in words is "twenty-nine billion, six hundred eighty-six million, six hundred eighty-six thousand, eight hundred thirty-two".