20440144230 has 32 divisors (see below), whose sum is σ = 53516014848. Its totient is φ = 4955186400.

The previous prime is 20440144217. The next prime is 20440144243. The reversal of 20440144230 is 3244104402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20440144217) and next prime (20440144243).

It is a super-2 number, since 2×20440144230² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20440144230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30969586 + ... + 30970245.

It is an arithmetic number, because the mean of its divisors is an integer number (1672375464).

Almost surely, 2^20440144230 is an apocalyptic number.

20440144230 is an abundant number, since it is smaller than the sum of its proper divisors (33075870618).

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

20440144230 is a wasteful number, since it uses less digits than its factorization.

20440144230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61939852.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20440144230 its reverse (3244104402), we get a palindrome (23684248632).

The spelling of 20440144230 in words is "twenty billion, four hundred forty million, one hundred forty-four thousand, two hundred thirty".