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47988044928 = 2732238321821
BaseRepresentation
bin101100101100010011…
…110111010010000000
311120212100222021010100
4230230103313102000
51241234414414203
634013450202400
73316121436345
oct545423672200
9146770867110
1047988044928
111939600046a
129373123400
1346a9c9ac75
1424734427cc
1513ace1eea3
hexb2c4f7480

47988044928 has 192 divisors, whose sum is σ = 145837298880. Its totient is φ = 15115499520.

The previous prime is 47988044927. The next prime is 47988044971. The reversal of 47988044928 is 82944088974.

47988044928 is a `hidden beast` number, since 4 + 7 + 98 + 80 + 449 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (47988044927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2188258 + ... + 2210078.

It is an arithmetic number, because the mean of its divisors is an integer number (759569265).

Almost surely, 247988044928 is an apocalyptic number.

47988044928 is a gapful number since it is divisible by the number (48) 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 47988044928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72918649440).

47988044928 is an abundant number, since it is smaller than the sum of its proper divisors (97849253952).

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

47988044928 is a wasteful number, since it uses less digits than its factorization.

47988044928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21947 (or 21932 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 47988044928 in words is "forty-seven billion, nine hundred eighty-eight million, forty-four thousand, nine hundred twenty-eight".