20286946848 has 96 divisors (see below), whose sum is σ = 61305358464. Its totient is φ = 5753935872.

The previous prime is 20286946831. The next prime is 20286946859. The reversal of 20286946848 is 84864968202.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18115 + ... + 202242.

It is an arithmetic number, because the mean of its divisors is an integer number (638597484).

Almost surely, 2^20286946848 is an apocalyptic number.

20286946848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20286946848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30652679232).

20286946848 is an abundant number, since it is smaller than the sum of its proper divisors (41018411616).

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

20286946848 is a wasteful number, since it uses less digits than its factorization.

20286946848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220514 (or 220506 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 20286946848 in words is "twenty billion, two hundred eighty-six million, nine hundred forty-six thousand, eight hundred forty-eight".