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288864648 = 233220032
BaseRepresentation
bin10001001101111…
…011100110001000
3202010112211210200
4101031323212020
51042422132043
644355212200
710105210662
oct2115734610
9663484720
10288864648
11139069316
12808a7060
1347acc537
142a515532
151a55e7d3
hex1137b988

288864648 has 36 divisors (see below), whose sum is σ = 782732535. Its totient is φ = 96240144.

The previous prime is 288864643. The next prime is 288864691. The reversal of 288864648 is 846468882.

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.

288864648 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 144432324 + 144432324 = 12018^2 + 12018^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅BA, here for A=2, B=12018.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 288864594 and 288864603.

It is not an unprimeable number, because it can be changed into a prime (288864643) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 143215 + ... + 145217.

Almost surely, 2288864648 is an apocalyptic number.

It is an amenable number.

288864648 is an abundant number, since it is smaller than the sum of its proper divisors (493867887).

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

288864648 is an equidigital number, since it uses as much as digits as its factorization.

288864648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018 (or 2008 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 54.

The square root of 288864648 is about 16996.0185925999. The cubic root of 288864648 is about 661.0456702423.

The spelling of 288864648 in words is "two hundred eighty-eight million, eight hundred sixty-four thousand, six hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 2003 4006 6009 8012 12018 16024 18027 24036 36054 48072 72108 144216 4012009 8024018 12036027 16048036 24072054 32096072 36108081 48144108 72216162 96288216 144432324 288864648