29705645 has 16 divisors (see below), whose sum is σ = 38327040. Its totient is φ = 22031424.

The previous prime is 29705593. The next prime is 29705653. The reversal of 29705645 is 54650792.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 29705645 - 2¹⁶ = 29640109 is a prime.

It is a super-3 number, since 3×29705645³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29705599 and 29705608.

It is a congruent number.

It is an unprimeable number.

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, 1139 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (2395440).

Almost surely, 2^29705645 is an apocalyptic number.

It is an amenable number.

29705645 is a deficient number, since it is larger than the sum of its proper divisors (8621395).

29705645 is a wasteful number, since it uses less digits than its factorization.

29705645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6724.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 29705645 is about 5450.2885244728. The cubic root of 29705645 is about 309.7036536676.

The spelling of 29705645 in words is "twenty-nine million, seven hundred five thousand, six hundred forty-five".