20594228 has 6 divisors (see below), whose sum is σ = 36039906. Its totient is φ = 10297112.

The previous prime is 20594227. The next prime is 20594243. The reversal of 20594228 is 82249502.

It can be written as a sum of positive squares in only one way, i.e., 20593444 + 784 = 4538^2 + 28^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20594194 and 20594203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20594221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2574275 + ... + 2574282.

It is an arithmetic number, because the mean of its divisors is an integer number (6006651).

Almost surely, 2^20594228 is an apocalyptic number.

It is an amenable number.

20594228 is a deficient number, since it is larger than the sum of its proper divisors (15445678).

20594228 is a wasteful number, since it uses less digits than its factorization.

20594228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148561 (or 5148559 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20594228 is about 4538.0863808438. The cubic root of 20594228 is about 274.1038730966.

The spelling of 20594228 in words is "twenty million, five hundred ninety-four thousand, two hundred twenty-eight".