20444420460 has 48 divisors (see below), whose sum is σ = 57337864416. Its totient is φ = 5442941952.

The previous prime is 20444420449. The next prime is 20444420467. The reversal of 20444420460 is 6402444402.

It is a super-2 number, since 2×20444420460² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20444420467) 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, 241149 + ... + 314708.

It is an arithmetic number, because the mean of its divisors is an integer number (1194538842).

Almost surely, 2^20444420460 is an apocalyptic number.

20444420460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444420460 is an abundant number, since it is smaller than the sum of its proper divisors (36893443956).

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

20444420460 is a wasteful number, since it uses less digits than its factorization.

20444420460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556482 (or 556480 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20444420460 its reverse (6402444402), we get a palindrome (26846864862).

The spelling of 20444420460 in words is "twenty billion, four hundred forty-four million, four hundred twenty thousand, four hundred sixty".