20226236 has 6 divisors (see below), whose sum is σ = 35395920. Its totient is φ = 10113116.

The previous prime is 20226233. The next prime is 20226247. The reversal of 20226236 is 63262202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2528276 + ... + 2528283.

It is an arithmetic number, because the mean of its divisors is an integer number (5899320).

Almost surely, 2^20226236 is an apocalyptic number.

It is an amenable number.

20226236 is a deficient number, since it is larger than the sum of its proper divisors (15169684).

20226236 is a wasteful number, since it uses less digits than its factorization.

20226236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056563 (or 5056561 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20226236 is about 4497.3587804399. The cubic root of 20226236 is about 272.4614248344.

Adding to 20226236 its reverse (63262202), we get a palindrome (83488438).

The spelling of 20226236 in words is "twenty million, two hundred twenty-six thousand, two hundred thirty-six".