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28835169 = 3112337991
BaseRepresentation
bin110110111111…
…1110101100001
32000020222102020
41231333311201
524340211134
62510012053
7500044356
oct155776541
960228366
1028835169
1115305320
1297a7029
135c87a3c
143b8862d
1527e8b49
hex1b7fd61

28835169 has 16 divisors (see below), whose sum is σ = 43766784. Its totient is φ = 16715600.

The previous prime is 28835167. The next prime is 28835221. The reversal of 28835169 is 96153882.

It is not a de Polignac number, because 28835169 - 21 = 28835167 is a prime.

It is a super-2 number, since 2×288351692 = 1662933942517122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28835169.

It is not an unprimeable number, because it can be changed into a prime (28835167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18237 + ... + 19754.

It is an arithmetic number, because the mean of its divisors is an integer number (2735424).

Almost surely, 228835169 is an apocalyptic number.

It is an amenable number.

28835169 is a deficient number, since it is larger than the sum of its proper divisors (14931615).

28835169 is a wasteful number, since it uses less digits than its factorization.

28835169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38028.

The product of its digits is 103680, while the sum is 42.

The square root of 28835169 is about 5369.8388243969. The cubic root of 28835169 is about 306.6484922804.

It can be divided in two parts, 288351 and 69, that added together give a triangular number (288420 = T759).

The spelling of 28835169 in words is "twenty-eight million, eight hundred thirty-five thousand, one hundred sixty-nine".

Divisors: 1 3 11 23 33 69 253 759 37991 113973 417901 873793 1253703 2621379 9611723 28835169