29927661 has 8 divisors (see below), whose sum is σ = 39997440. Its totient is φ = 19904832.

The previous prime is 29927609. The next prime is 29927671. The reversal of 29927661 is 16672992.

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

It is not a de Polignac number, because 29927661 - 2¹⁷ = 29796589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29927671) 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, 10221 + ... + 12818.

It is an arithmetic number, because the mean of its divisors is an integer number (4999680).

Almost surely, 2^29927661 is an apocalyptic number.

It is an amenable number.

29927661 is a deficient number, since it is larger than the sum of its proper divisors (10069779).

29927661 is a wasteful number, since it uses less digits than its factorization.

29927661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23475.

The product of its digits is 81648, while the sum is 42.

The square root of 29927661 is about 5470.6179724049. The cubic root of 29927661 is about 310.4733005947.

The spelling of 29927661 in words is "twenty-nine million, nine hundred twenty-seven thousand, six hundred sixty-one".