20226243 has 24 divisors (see below), whose sum is σ = 29398320. Its totient is φ = 12359680.

The previous prime is 20226233. The next prime is 20226247. The reversal of 20226243 is 34262202.

It is not a de Polignac number, because 20226243 - 2⁶ = 20226179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20226247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35263 + ... + 35831.

It is an arithmetic number, because the mean of its divisors is an integer number (1224930).

Almost surely, 2^20226243 is an apocalyptic number.

20226243 is a deficient number, since it is larger than the sum of its proper divisors (9172077).

20226243 is a wasteful number, since it uses less digits than its factorization.

20226243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20226243 is about 4497.3595586744. The cubic root of 20226243 is about 272.4614562660.

Adding to 20226243 its reverse (34262202), we get a palindrome (54488445).

The spelling of 20226243 in words is "twenty million, two hundred twenty-six thousand, two hundred forty-three".