29681445 has 8 divisors (see below), whose sum is σ = 47490336. Its totient is φ = 15830096.

The previous prime is 29681419. The next prime is 29681453. The reversal of 29681445 is 54418692.

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

It is a cyclic number.

It is not a de Polignac number, because 29681445 - 2¹⁰ = 29680421 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 989367 + ... + 989396.

It is an arithmetic number, because the mean of its divisors is an integer number (5936292).

Almost surely, 2^29681445 is an apocalyptic number.

It is an amenable number.

29681445 is a deficient number, since it is larger than the sum of its proper divisors (17808891).

29681445 is a wasteful number, since it uses less digits than its factorization.

29681445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978771.

The product of its digits is 69120, while the sum is 39.

The square root of 29681445 is about 5448.0680061835. The cubic root of 29681445 is about 309.6195297624.

The spelling of 29681445 in words is "twenty-nine million, six hundred eighty-one thousand, four hundred forty-five".