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28008527 = 191738521
BaseRepresentation
bin110101011011…
…0000001001111
31221200222110212
41222312001033
524132233102
62440153035
7460032341
oct152660117
957628425
1028008527
11148a0248
12946877b
135a586c1
143a11291
1526d3c52
hex1ab604f

28008527 has 8 divisors (see below), whose sum is σ = 29656560. Its totient is φ = 26377920.

The previous prime is 28008517. The next prime is 28008551. The reversal of 28008527 is 72580082.

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 28008527 - 24 = 28008511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28008493 and 28008502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28008517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974 + ... + 7547.

It is an arithmetic number, because the mean of its divisors is an integer number (3707070).

Almost surely, 228008527 is an apocalyptic number.

28008527 is a deficient number, since it is larger than the sum of its proper divisors (1648033).

28008527 is a wasteful number, since it uses less digits than its factorization.

28008527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8713.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 28008527 is about 5292.3082865608. The cubic root of 28008527 is about 303.6897190520.

The spelling of 28008527 in words is "twenty-eight million, eight thousand, five hundred twenty-seven".

Divisors: 1 19 173 3287 8521 161899 1474133 28008527