20662226 has 16 divisors (see below), whose sum is σ = 33456024. Its totient is φ = 9513984.

The previous prime is 20662183. The next prime is 20662241. The reversal of 20662226 is 62226602.

It can be written as a sum of positive squares in 4 ways, for example, as 9765625 + 10896601 = 3125^2 + 3301^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 20662195 and 20662204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16370 + ... + 17586.

Almost surely, 2^20662226 is an apocalyptic number.

20662226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20662226 is a deficient number, since it is larger than the sum of its proper divisors (12793798).

20662226 is a wasteful number, since it uses less digits than its factorization.

20662226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20662226 is about 4545.5721312064. The cubic root of 20662226 is about 274.4052203020.

Adding to 20662226 its reverse (62226602), we get a palindrome (82888828).

The spelling of 20662226 in words is "twenty million, six hundred sixty-two thousand, two hundred twenty-six".