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64568448 = 2733717157
BaseRepresentation
bin1111011001001…
…1110010000000
311111111102021000
43312103302000
5113012142243
610223532000
71412552130
oct366236200
9144442230
1064568448
11334a125a
121975a000
13104b94a9
14880aac0
155a065d3
hex3d93c80

64568448 has 256 divisors, whose sum is σ = 232070400. Its totient is φ = 17252352.

The previous prime is 64568447. The next prime is 64568473. The reversal of 64568448 is 84486546.

It is not an unprimeable number, because it can be changed into a prime (64568447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411186 + ... + 411342.

It is an arithmetic number, because the mean of its divisors is an integer number (906525).

Almost surely, 264568448 is an apocalyptic number.

64568448 is a gapful number since it is divisible by the number (68) 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 64568448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116035200).

64568448 is an abundant number, since it is smaller than the sum of its proper divisors (167501952).

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

64568448 is a wasteful number, since it uses less digits than its factorization.

64568448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 186 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 64568448 is about 8035.4494584933. The cubic root of 64568448 is about 401.1807776473.

The spelling of 64568448 in words is "sixty-four million, five hundred sixty-eight thousand, four hundred forty-eight".