29906857 has 8 divisors (see below), whose sum is σ = 30464000. Its totient is φ = 29353104.

The previous prime is 29906839. The next prime is 29906867. The reversal of 29906857 is 75860992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29906857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29906827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22744 + ... + 24022.

It is an arithmetic number, because the mean of its divisors is an integer number (3808000).

Almost surely, 2^29906857 is an apocalyptic number.

It is an amenable number.

29906857 is a deficient number, since it is larger than the sum of its proper divisors (557143).

29906857 is a wasteful number, since it uses less digits than its factorization.

29906857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 29906857 is about 5468.7162113242. The cubic root of 29906857 is about 310.4013428187.

The spelling of 29906857 in words is "twenty-nine million, nine hundred six thousand, eight hundred fifty-seven".