20440235330 has 32 divisors (see below), whose sum is σ = 38862540288. Its totient is φ = 7728336000.

The previous prime is 20440235327. The next prime is 20440235339. The reversal of 20440235330 is 3353204402.

It is a self number, because there is not a number n which added to its sum of digits gives 20440235330.

It is not an unprimeable number, because it can be changed into a prime (20440235339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753371 + ... + 780030.

It is an arithmetic number, because the mean of its divisors is an integer number (1214454384).

Almost surely, 2^20440235330 is an apocalyptic number.

20440235330 is a deficient number, since it is larger than the sum of its proper divisors (18422304958).

20440235330 is a wasteful number, since it uses less digits than its factorization.

20440235330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533482.

The product of its (nonzero) digits is 8640, while the sum is 26.

Adding to 20440235330 its reverse (3353204402), we get a palindrome (23793439732).

The spelling of 20440235330 in words is "twenty billion, four hundred forty million, two hundred thirty-five thousand, three hundred thirty".