20326228 has 12 divisors (see below), whose sum is σ = 38307220. Its totient is φ = 9381312.

The previous prime is 20326213. The next prime is 20326247. The reversal of 20326228 is 82262302.

It can be written as a sum of positive squares in 2 ways, for example, as 7851204 + 12475024 = 2802^2 + 3532^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195393 + ... + 195496.

Almost surely, 2^20326228 is an apocalyptic number.

It is an amenable number.

20326228 is a deficient number, since it is larger than the sum of its proper divisors (17980992).

20326228 is a wasteful number, since it uses less digits than its factorization.

20326228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390906 (or 390904 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20326228 is about 4508.4618219521. The cubic root of 20326228 is about 272.9096741703.

The spelling of 20326228 in words is "twenty million, three hundred twenty-six thousand, two hundred twenty-eight".