29685427 has 4 divisors (see below), whose sum is σ = 29834800. Its totient is φ = 29536056.

The previous prime is 29685421. The next prime is 29685443. The reversal of 29685427 is 72458692.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29685427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29685421) 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, 74388 + ... + 74785.

It is an arithmetic number, because the mean of its divisors is an integer number (7458700).

Almost surely, 2^29685427 is an apocalyptic number.

29685427 is a deficient number, since it is larger than the sum of its proper divisors (149373).

29685427 is a wasteful number, since it uses less digits than its factorization.

29685427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149372.

The product of its digits is 241920, while the sum is 43.

The square root of 29685427 is about 5448.4334445784. The cubic root of 29685427 is about 309.6333751108.

The spelling of 29685427 in words is "twenty-nine million, six hundred eighty-five thousand, four hundred twenty-seven".