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28126134 = 23214910487
BaseRepresentation
bin110101101001…
…0101110110110
31221220221210200
41223102232312
524200014014
62442501330
7461032251
oct153225666
957827720
1028126134
1114970643
129504846
135a9a0aa
143a42098
152708a09
hex1ad2bb6

28126134 has 24 divisors (see below), whose sum is σ = 61354800. Its totient is φ = 9311568.

The previous prime is 28126121. The next prime is 28126141. The reversal of 28126134 is 43162182.

It is a junction number, because it is equal to n+sod(n) for n = 28126098 and 28126107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2562 + ... + 7925.

It is an arithmetic number, because the mean of its divisors is an integer number (2556450).

Almost surely, 228126134 is an apocalyptic number.

28126134 is an abundant number, since it is smaller than the sum of its proper divisors (33228666).

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

28126134 is a wasteful number, since it uses less digits than its factorization.

28126134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10644 (or 10641 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 28126134 is about 5303.4077723667. The cubic root of 28126134 is about 304.1141869635.

The spelling of 28126134 in words is "twenty-eight million, one hundred twenty-six thousand, one hundred thirty-four".

Divisors: 1 2 3 6 9 18 149 298 447 894 1341 2682 10487 20974 31461 62922 94383 188766 1562563 3125126 4687689 9375378 14063067 28126134