20530226 has 8 divisors (see below), whose sum is σ = 30967920. Its totient is φ = 10207588.

The previous prime is 20530219. The next prime is 20530229. The reversal of 20530226 is 62203502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20530226² = 842980359222152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20530198 and 20530207.

It is not an unprimeable number, because it can be changed into a prime (20530229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28316 + ... + 29031.

It is an arithmetic number, because the mean of its divisors is an integer number (3870990).

Almost surely, 2^20530226 is an apocalyptic number.

20530226 is a deficient number, since it is larger than the sum of its proper divisors (10437694).

20530226 is a wasteful number, since it uses less digits than its factorization.

20530226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57528.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20530226 is about 4531.0292428984. The cubic root of 20530226 is about 273.8196283898.

Adding to 20530226 its reverse (62203502), we get a palindrome (82733728).

The spelling of 20530226 in words is "twenty million, five hundred thirty thousand, two hundred twenty-six".