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28864014 = 2311294261
BaseRepresentation
bin110111000011…
…0111000001110
32000022102222120
41232012320032
524342122024
62510353410
7500224434
oct156067016
960272876
1028864014
1115324a63
1297bb866
135c97bca
143b94d54
152802479
hex1b86e0e

28864014 has 16 divisors (see below), whose sum is σ = 57792720. Its totient is φ = 9610560.

The previous prime is 28864009. The next prime is 28864027. The reversal of 28864014 is 41046882.

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, 4644 + ... + 8904.

It is an arithmetic number, because the mean of its divisors is an integer number (3612045).

Almost surely, 228864014 is an apocalyptic number.

28864014 is an abundant number, since it is smaller than the sum of its proper divisors (28928706).

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

28864014 is a wasteful number, since it uses less digits than its factorization.

28864014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28864014 is about 5372.5239878478. The cubic root of 28864014 is about 306.7507092175.

The spelling of 28864014 in words is "twenty-eight million, eight hundred sixty-four thousand, fourteen".

Divisors: 1 2 3 6 1129 2258 3387 4261 6774 8522 12783 25566 4810669 9621338 14432007 28864014