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28043067 = 3134715299
BaseRepresentation
bin110101011111…
…0011100111011
31221202201212010
41222332130323
524134334232
62441021003
7460235133
oct152763473
957681763
1028043067
1114914198
129484763
135a6b340
143a1dac3
1526de0cc
hex1abe73b

28043067 has 16 divisors (see below), whose sum is σ = 41126400. Its totient is φ = 16888992.

The previous prime is 28043053. The next prime is 28043117. The reversal of 28043067 is 76034082.

It is not a de Polignac number, because 28043067 - 27 = 28042939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28043027) 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, 5817 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (2570400).

Almost surely, 228043067 is an apocalyptic number.

28043067 is a deficient number, since it is larger than the sum of its proper divisors (13083333).

28043067 is a wasteful number, since it uses less digits than its factorization.

28043067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15362.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28043067 is about 5295.5705075091. The cubic root of 28043067 is about 303.8145040744.

The spelling of 28043067 in words is "twenty-eight million, forty-three thousand, sixty-seven".

Divisors: 1 3 13 39 47 141 611 1833 15299 45897 198887 596661 719053 2157159 9347689 28043067