20308944000 has 128 divisors (see below), whose sum is σ = 67324308480. Its totient is φ = 5415705600.

The previous prime is 20308943969. The next prime is 20308944011. The reversal of 20308944000 is 44980302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 163552 + ... + 259551.

It is an arithmetic number, because the mean of its divisors is an integer number (525971160).

Almost surely, 2^20308944000 is an apocalyptic number.

20308944000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20308944000 is an abundant number, since it is smaller than the sum of its proper divisors (47015364480).

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

20308944000 is an equidigital number, since it uses as much as digits as its factorization.

20308944000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423135 (or 423113 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 20308944000 in words is "twenty billion, three hundred eight million, nine hundred forty-four thousand".