20226653 has 4 divisors (see below), whose sum is σ = 20720028. Its totient is φ = 19733280.

The previous prime is 20226649. The next prime is 20226673. The reversal of 20226653 is 35662202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11682724 + 8543929 = 3418^2 + 2923^2 .

It is a cyclic number.

It is not a de Polignac number, because 20226653 - 2² = 20226649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226623) 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, 246626 + ... + 246707.

It is an arithmetic number, because the mean of its divisors is an integer number (5180007).

Almost surely, 2^20226653 is an apocalyptic number.

It is an amenable number.

20226653 is a deficient number, since it is larger than the sum of its proper divisors (493375).

20226653 is an equidigital number, since it uses as much as digits as its factorization.

20226653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493374.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20226653 is about 4497.4051407450. The cubic root of 20226653 is about 272.4632972479.

Adding to 20226653 its reverse (35662202), we get a palindrome (55888855).

The spelling of 20226653 in words is "twenty million, two hundred twenty-six thousand, six hundred fifty-three".