29705145 has 8 divisors (see below), whose sum is σ = 47528256. Its totient is φ = 15842736.

The previous prime is 29705141. The next prime is 29705153. The reversal of 29705145 is 54150792.

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

It is not a de Polignac number, because 29705145 - 2² = 29705141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29705141) 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, 990157 + ... + 990186.

It is an arithmetic number, because the mean of its divisors is an integer number (5941032).

Almost surely, 2^29705145 is an apocalyptic number.

It is an amenable number.

29705145 is a deficient number, since it is larger than the sum of its proper divisors (17823111).

29705145 is a wasteful number, since it uses less digits than its factorization.

29705145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980351.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 29705145 is about 5450.2426551485. The cubic root of 29705145 is about 309.7019160327.

The spelling of 29705145 in words is "twenty-nine million, seven hundred five thousand, one hundred forty-five".