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20004800288 = 2511222732
BaseRepresentation
bin10010101000011000…
…010000011100100000
31220122011120011000012
4102220120100130200
5311432212102123
613105020144052
71305510665624
oct225030203440
956564504005
1020004800288
118536208600
123a63698028
131b6a698845
14d7abb5184
157c13b8378
hex4a8610720

20004800288 has 54 divisors (see below), whose sum is σ = 43309400337. Its totient is φ = 9089090560.

The previous prime is 20004800281. The next prime is 20004800311. The reversal of 20004800288 is 88200840002.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 16248091024 + 3756709264 = 127468^2 + 61292^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=100012.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004800281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8799920 + ... + 8802192.

Almost surely, 220004800288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004800288

20004800288 is an abundant number, since it is smaller than the sum of its proper divisors (23304600049).

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

20004800288 is an frugal number, since it uses more digits than its factorization.

20004800288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578 (or 2286 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

Multiplying 20004800288 by its sum of digits (32), we get a square (640153609216 = 8000962).

20004800288 divided by its sum of digits (32) gives a square (625150009 = 250032).

Multiplying 20004800288 by its product of nonzero digits (8192), we get a square (163879323959296 = 128015362).

The spelling of 20004800288 in words is "twenty billion, four million, eight hundred thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 11 16 22 32 44 88 121 176 242 352 484 968 1936 2273 3872 4546 9092 18184 25003 36368 50006 72736 100012 200024 275033 400048 550066 800096 1100132 2200264 4400528 5166529 8801056 10333058 20666116 41332232 56831819 82664464 113663638 165328928 227327276 454654552 625150009 909309104 1250300018 1818618208 2500600036 5001200072 10002400144 20004800288