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28085995 = 571794483
BaseRepresentation
bin110101100100…
…0111011101011
31221211220202001
41223020323223
524142222440
62441551431
7460504240
oct153107353
957756661
1028085995
1114943473
1294a5577
135a84a42
143a315c7
1526ebb9a
hex1ac8eeb

28085995 has 16 divisors (see below), whose sum is σ = 38741760. Its totient is φ = 19147104.

The previous prime is 28085987. The next prime is 28086017. The reversal of 28085995 is 59958082.

It is a cyclic number.

It is not a de Polignac number, because 28085995 - 23 = 28085987 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4024 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (2421360).

Almost surely, 228085995 is an apocalyptic number.

28085995 is a deficient number, since it is larger than the sum of its proper divisors (10655765).

28085995 is a wasteful number, since it uses less digits than its factorization.

28085995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 28085995 is about 5299.6221563428. The cubic root of 28085995 is about 303.9694502715.

The spelling of 28085995 in words is "twenty-eight million, eighty-five thousand, nine hundred ninety-five".

Divisors: 1 5 7 35 179 895 1253 4483 6265 22415 31381 156905 802457 4012285 5617199 28085995