29221906 has 16 divisors (see below), whose sum is σ = 50164416. Its totient is φ = 12506256.

The previous prime is 29221903. The next prime is 29221957. The reversal of 29221906 is 60912292.

It is not an unprimeable number, because it can be changed into a prime (29221901) 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, 17500 + ... + 19096.

It is an arithmetic number, because the mean of its divisors is an integer number (3135276).

Almost surely, 2^29221906 is an apocalyptic number.

29221906 is a deficient number, since it is larger than the sum of its proper divisors (20942510).

29221906 is a wasteful number, since it uses less digits than its factorization.

29221906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 29221906 is about 5405.7289980168. The cubic root of 29221906 is about 308.0133307886.

The spelling of 29221906 in words is "twenty-nine million, two hundred twenty-one thousand, nine hundred six".