20227770 has 48 divisors (see below), whose sum is σ = 52832520. Its totient is φ = 5369472.

The previous prime is 20227747. The next prime is 20227817. The reversal of 20227770 is 7772202.

It can be written as a sum of positive squares in 4 ways, for example, as 6985449 + 13242321 = 2643^2 + 3639^2 .

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 28176 + ... + 28884.

Almost surely, 2^20227770 is an apocalyptic number.

20227770 is an abundant number, since it is smaller than the sum of its proper divisors (32604750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20227770 is a wasteful number, since it uses less digits than its factorization.

20227770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20227770 is about 4497.5293217499. The cubic root of 20227770 is about 272.4683126749.

Adding to 20227770 its reverse (7772202), we get a palindrome (27999972).

It can be divided in two parts, 202 and 27770, that added together give a palindrome (27972).

The spelling of 20227770 in words is "twenty million, two hundred twenty-seven thousand, seven hundred seventy".