29986705 has 16 divisors (see below), whose sum is σ = 42001920. Its totient is φ = 20123712.

The previous prime is 29986673. The next prime is 29986709. The reversal of 29986705 is 50768992.

It is not a de Polignac number, because 29986705 - 2⁵ = 29986673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29986709) 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 15 ways as a sum of consecutive naturals, for example, 7470 + ... + 10759.

It is an arithmetic number, because the mean of its divisors is an integer number (2625120).

Almost surely, 2^29986705 is an apocalyptic number.

It is an amenable number.

29986705 is a deficient number, since it is larger than the sum of its proper divisors (12015215).

29986705 is a wasteful number, since it uses less digits than its factorization.

29986705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18288.

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

The square root of 29986705 is about 5476.0117786579. The cubic root of 29986705 is about 310.6773430841.

The spelling of 29986705 in words is "twenty-nine million, nine hundred eighty-six thousand, seven hundred five".