20512226 has 16 divisors (see below), whose sum is σ = 35741760. Its totient is φ = 8646480.

The previous prime is 20512223. The next prime is 20512241. The reversal of 20512226 is 62221502.

It is a junction number, because it is equal to n+sod(n) for n = 20512198 and 20512207.

It is not an unprimeable number, because it can be changed into a prime (20512223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11156 + ... + 12863.

It is an arithmetic number, because the mean of its divisors is an integer number (2233860).

Almost surely, 2^20512226 is an apocalyptic number.

20512226 is a deficient number, since it is larger than the sum of its proper divisors (15229534).

20512226 is a wasteful number, since it uses less digits than its factorization.

20512226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24089.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20512226 is about 4529.0425036645. The cubic root of 20512226 is about 273.7395806519.

Adding to 20512226 its reverse (62221502), we get a palindrome (82733728).

The spelling of 20512226 in words is "twenty million, five hundred twelve thousand, two hundred twenty-six".