20444231304 has 128 divisors (see below), whose sum is σ = 66656620800. Its totient is φ = 5683322880.

The previous prime is 20444231281. The next prime is 20444231309. The reversal of 20444231304 is 40313244402.

It is a happy number.

20444231304 is a `hidden beast` number, since 204 + 4 + 423 + 1 + 30 + 4 = 666.

It is a super-2 number, since 2×20444231304² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20444231309) 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 in 31 ways as a sum of consecutive naturals, for example, 126777 + ... + 238664.

It is an arithmetic number, because the mean of its divisors is an integer number (520754850).

Almost surely, 2^20444231304 is an apocalyptic number.

20444231304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20444231304 is an abundant number, since it is smaller than the sum of its proper divisors (46212389496).

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

20444231304 is a wasteful number, since it uses less digits than its factorization.

20444231304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365500 (or 365490 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20444231304 its reverse (40313244402), we get a palindrome (60757475706).

The spelling of 20444231304 in words is "twenty billion, four hundred forty-four million, two hundred thirty-one thousand, three hundred four".