29689686 has 32 divisors (see below), whose sum is σ = 71053920. Its totient is φ = 9135072.

The previous prime is 29689669. The next prime is 29689697. The reversal of 29689686 is 68698692.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20445 + ... + 21848.

It is an arithmetic number, because the mean of its divisors is an integer number (2220435).

Almost surely, 2^29689686 is an apocalyptic number.

29689686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

29689686 is an abundant number, since it is smaller than the sum of its proper divisors (41364234).

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

29689686 is a wasteful number, since it uses less digits than its factorization.

29689686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42317 (or 42311 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 29689686 is about 5448.8242768509. The cubic root of 29689686 is about 309.6481822133.

The spelling of 29689686 in words is "twenty-nine million, six hundred eighty-nine thousand, six hundred eighty-six".