20544226 has 16 divisors (see below), whose sum is σ = 31367520. Its totient is φ = 10090080.

The previous prime is 20544203. The next prime is 20544233. The reversal of 20544226 is 62244502.

It is a self number, because there is not a number n which added to its sum of digits gives 20544226.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37285 + ... + 37831.

It is an arithmetic number, because the mean of its divisors is an integer number (1960470).

Almost surely, 2^20544226 is an apocalyptic number.

20544226 is a deficient number, since it is larger than the sum of its proper divisors (10823294).

20544226 is a wasteful number, since it uses less digits than its factorization.

20544226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20544226 is about 4532.5738824646. The cubic root of 20544226 is about 273.8818554001.

Adding to 20544226 its reverse (62244502), we get a palindrome (82788728).

The spelling of 20544226 in words is "twenty million, five hundred forty-four thousand, two hundred twenty-six".