29268221 has 8 divisors (see below), whose sum is σ = 31096920. Its totient is φ = 27494208.

The previous prime is 29268209. The next prime is 29268223. The reversal of 29268221 is 12286292.

It can be written as a sum of positive squares in 4 ways, for example, as 6180196 + 23088025 = 2486^2 + 4805^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29268221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29268223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12566 + ... + 14711.

It is an arithmetic number, because the mean of its divisors is an integer number (3887115).

Almost surely, 2^29268221 is an apocalyptic number.

It is an amenable number.

29268221 is a deficient number, since it is larger than the sum of its proper divisors (1828699).

29268221 is a wasteful number, since it uses less digits than its factorization.

29268221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27343.

The product of its digits is 6912, while the sum is 32.

The square root of 29268221 is about 5410.0111829829. The cubic root of 29268221 is about 308.1759725560.

The spelling of 29268221 in words is "twenty-nine million, two hundred sixty-eight thousand, two hundred twenty-one".