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8528289 = 371136919
BaseRepresentation
bin100000100010…
…000110100001
3121001021121120
4200202012201
54140401124
6502442453
7132326550
oct40420641
917037546
108528289
1148a5480
122a33429
1319c7a33
1411bdd97
15b36d79
hex8221a1

8528289 has 16 divisors (see below), whose sum is σ = 14177280. Its totient is φ = 4430160.

The previous prime is 8528281. The next prime is 8528309. The reversal of 8528289 is 9828258.

It is not a de Polignac number, because 8528289 - 23 = 8528281 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8528289.

It is not an unprimeable number, because it can be changed into a prime (8528281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18229 + ... + 18690.

It is an arithmetic number, because the mean of its divisors is an integer number (886080).

Almost surely, 28528289 is an apocalyptic number.

It is an amenable number.

8528289 is a deficient number, since it is larger than the sum of its proper divisors (5648991).

8528289 is a wasteful number, since it uses less digits than its factorization.

8528289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36940.

The product of its digits is 92160, while the sum is 42.

The square root of 8528289 is about 2920.3234409907. The cubic root of 8528289 is about 204.3089081993.

The spelling of 8528289 in words is "eight million, five hundred twenty-eight thousand, two hundred eighty-nine".

Divisors: 1 3 7 11 21 33 77 231 36919 110757 258433 406109 775299 1218327 2842763 8528289