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28094214 = 2329161461
BaseRepresentation
bin110101100101…
…0111100000110
31221212100000110
41223022330012
524143003324
62442053450
7460540221
oct153127406
957770013
1028094214
1114949665
1294aa286
135a886c5
143a345b8
1526ee329
hex1acaf06

28094214 has 16 divisors (see below), whose sum is σ = 58126320. Its totient is φ = 9041760.

The previous prime is 28094197. The next prime is 28094233. The reversal of 28094214 is 41249082.

It is a congruent number.

It is an unprimeable number.

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, 80557 + ... + 80904.

It is an arithmetic number, because the mean of its divisors is an integer number (3632895).

Almost surely, 228094214 is an apocalyptic number.

28094214 is an abundant number, since it is smaller than the sum of its proper divisors (30032106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28094214 is a wasteful number, since it uses less digits than its factorization.

28094214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161495.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28094214 is about 5300.3975322611. The cubic root of 28094214 is about 303.9990982776. Note that the first 3 decimals are identical.

The spelling of 28094214 in words is "twenty-eight million, ninety-four thousand, two hundred fourteen".

Divisors: 1 2 3 6 29 58 87 174 161461 322922 484383 968766 4682369 9364738 14047107 28094214