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28183001 = 711366013
BaseRepresentation
bin110101110000…
…0100111011001
31222000211210212
41223200213121
524203324001
62444020505
7461360120
oct153404731
958024725
1028183001
11149aa340
129531735
135ab9c42
143a58ab7
15271a7bb
hex1ae09d9

28183001 has 8 divisors (see below), whose sum is σ = 35137344. Its totient is φ = 21960720.

The previous prime is 28182997. The next prime is 28183009. The reversal of 28183001 is 10038182.

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 28183001 - 22 = 28182997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28183009) 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, 182930 + ... + 183083.

It is an arithmetic number, because the mean of its divisors is an integer number (4392168).

Almost surely, 228183001 is an apocalyptic number.

It is an amenable number.

28183001 is a deficient number, since it is larger than the sum of its proper divisors (6954343).

28183001 is a wasteful number, since it uses less digits than its factorization.

28183001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366031.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 28183001 is about 5308.7664292188. The cubic root of 28183001 is about 304.3190073768.

The spelling of 28183001 in words is "twenty-eight million, one hundred eighty-three thousand, one".

Divisors: 1 7 11 77 366013 2562091 4026143 28183001