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288111601 = 618953069
BaseRepresentation
bin10001001011000…
…011101111110001
3202002010120211001
4101023003233301
51042224032401
644331122001
710065623341
oct2113035761
9662116731
10288111601
111386a4568
12805a3301
13478c784b
142a39ad21
151a461601
hex112c3bf1

288111601 has 8 divisors (see below), whose sum is σ = 296130600. Its totient is φ = 280199040.

The previous prime is 288111599. The next prime is 288111617. The reversal of 288111601 is 106111882.

It can be written as a sum of positive squares in 4 ways, for example, as 19184400 + 268927201 = 4380^2 + 16399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 288111601 - 21 = 288111599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 288111601.

It is not an unprimeable number, because it can be changed into a prime (288111641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21106 + ... + 31963.

It is an arithmetic number, because the mean of its divisors is an integer number (37016325).

Almost surely, 2288111601 is an apocalyptic number.

It is an amenable number.

288111601 is a deficient number, since it is larger than the sum of its proper divisors (8018999).

288111601 is an equidigital number, since it uses as much as digits as its factorization.

288111601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53219.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 288111601 is about 16973.8505059989. The cubic root of 288111601 is about 660.4707393148.

The spelling of 288111601 in words is "two hundred eighty-eight million, one hundred eleven thousand, six hundred one".

Divisors: 1 61 89 5429 53069 3237209 4723141 288111601