20244646020 has 48 divisors (see below), whose sum is σ = 56716994880. Its totient is φ = 5395526016.

The previous prime is 20244645997. The next prime is 20244646021. The reversal of 20244646020 is 2064644202.

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 (20244646021) 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, 13039 + ... + 201641.

It is an arithmetic number, because the mean of its divisors is an integer number (1181604060).

Almost surely, 2^20244646020 is an apocalyptic number.

20244646020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244646020 is an abundant number, since it is smaller than the sum of its proper divisors (36472348860).

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

20244646020 is a wasteful number, since it uses less digits than its factorization.

20244646020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190404 (or 190402 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 20244646020 in words is "twenty billion, two hundred forty-four million, six hundred forty-six thousand, twenty".