20329222 has 4 divisors (see below), whose sum is σ = 30493836. Its totient is φ = 10164610.

The previous prime is 20329201. The next prime is 20329237. The reversal of 20329222 is 22292302.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20329193 and 20329202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5082304 + ... + 5082307.

It is an arithmetic number, because the mean of its divisors is an integer number (7623459).

Almost surely, 2^20329222 is an apocalyptic number.

20329222 is a deficient number, since it is larger than the sum of its proper divisors (10164614).

20329222 is a wasteful number, since it uses less digits than its factorization.

20329222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10164613.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20329222 is about 4508.7938520185. The cubic root of 20329222 is about 272.9230731385.

The spelling of 20329222 in words is "twenty million, three hundred twenty-nine thousand, two hundred twenty-two".