20223130 has 16 divisors (see below), whose sum is σ = 36606024. Its totient is φ = 8043840.

The previous prime is 20223109. The next prime is 20223139. The reversal of 20223130 is 3132202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9418761 + 10804369 = 3069^2 + 3287^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20223130.

It is not an unprimeable number, because it can be changed into a prime (20223139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3777 + ... + 7396.

Almost surely, 2^20223130 is an apocalyptic number.

20223130 is a deficient number, since it is larger than the sum of its proper divisors (16382894).

20223130 is a wasteful number, since it uses less digits than its factorization.

20223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20223130 is about 4497.0134533933. The cubic root of 20223130 is about 272.4474774625.

Adding to 20223130 its reverse (3132202), we get a palindrome (23355332).

It can be divided in two parts, 202 and 23130, that added together give a palindrome (23332).

The spelling of 20223130 in words is "twenty million, two hundred twenty-three thousand, one hundred thirty".