20226286 has 4 divisors (see below), whose sum is σ = 30339432. Its totient is φ = 10113142.

The previous prime is 20226281. The next prime is 20226289. The reversal of 20226286 is 68262202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5056570 + ... + 5056573.

It is an arithmetic number, because the mean of its divisors is an integer number (7584858).

Almost surely, 2^20226286 is an apocalyptic number.

20226286 is a deficient number, since it is larger than the sum of its proper divisors (10113146).

20226286 is a wasteful number, since it uses less digits than its factorization.

20226286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10113145.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20226286 is about 4497.3643392547. The cubic root of 20226286 is about 272.4616493458.

Adding to 20226286 its reverse (68262202), we get a palindrome (88488488).

The spelling of 20226286 in words is "twenty million, two hundred twenty-six thousand, two hundred eighty-six".