29129685 has 24 divisors (see below), whose sum is σ = 50472864. Its totient is φ = 14339520.

The previous prime is 29129671. The next prime is 29129699. The reversal of 29129685 is 58692192.

It is an interprime number because it is at equal distance from previous prime (29129671) and next prime (29129699).

It is not a de Polignac number, because 29129685 - 2⁴ = 29129669 is a prime.

It is a Curzon number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 3211 + ... + 8280.

It is an arithmetic number, because the mean of its divisors is an integer number (2103036).

Almost surely, 2^29129685 is an apocalyptic number.

It is an amenable number.

29129685 is a deficient number, since it is larger than the sum of its proper divisors (21343179).

29129685 is a wasteful number, since it uses less digits than its factorization.

29129685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11525 (or 11512 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 29129685 is about 5397.1923256449. The cubic root of 29129685 is about 307.6889710295.

The spelling of 29129685 in words is "twenty-nine million, one hundred twenty-nine thousand, six hundred eighty-five".