20446223 has 16 divisors (see below), whose sum is σ = 26046720. Its totient is φ = 15624576.

The previous prime is 20446213. The next prime is 20446243. The reversal of 20446223 is 32264402.

It is a cyclic number.

It is not a de Polignac number, because 20446223 - 2¹² = 20442127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2261 + ... + 6782.

It is an arithmetic number, because the mean of its divisors is an integer number (1627920).

Almost surely, 2^20446223 is an apocalyptic number.

20446223 is a deficient number, since it is larger than the sum of its proper divisors (5600497).

20446223 is a wasteful number, since it uses less digits than its factorization.

20446223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20446223 is about 4521.7499930890. The cubic root of 20446223 is about 273.4456576157.

The spelling of 20446223 in words is "twenty million, four hundred forty-six thousand, two hundred twenty-three".