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28134876 = 22371130449
BaseRepresentation
bin110101101010…
…0110111011100
31221221101210110
41223110313130
524200304001
62443010020
7461066610
oct153246734
957841713
1028134876
1114977170
129509910
135aa1073
143a45340
15270b3d6
hex1ad4ddc

28134876 has 48 divisors (see below), whose sum is σ = 81849600. Its totient is φ = 7307520.

The previous prime is 28134859. The next prime is 28134893. The reversal of 28134876 is 67843182.

It is an interprime number because it is at equal distance from previous prime (28134859) and next prime (28134893).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14301 + ... + 16148.

It is an arithmetic number, because the mean of its divisors is an integer number (1705200).

Almost surely, 228134876 is an apocalyptic number.

It is an amenable number.

28134876 is an abundant number, since it is smaller than the sum of its proper divisors (53714724).

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

28134876 is a wasteful number, since it uses less digits than its factorization.

28134876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30474 (or 30472 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 28134876 is about 5304.2318953832. The cubic root of 28134876 is about 304.1456913623.

The spelling of 28134876 in words is "twenty-eight million, one hundred thirty-four thousand, eight hundred seventy-six".

Divisors: 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 66 77 84 132 154 231 308 462 924 30449 60898 91347 121796 182694 213143 334939 365388 426286 639429 669878 852572 1004817 1278858 1339756 2009634 2344573 2557716 4019268 4689146 7033719 9378292 14067438 28134876