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28318131628835 = 5171920849841021
BaseRepresentation
bin1100111000001010101000…
…01011010010101100100011
310201021012001021122010002212
412130011110023102230203
512202431013144110320
6140121100423032335
75651626462202246
oct634052413225443
9121235037563085
1028318131628835
11902871a063694
1232142b0b9b6ab
1312a55082a3049
146dc867b3125d
153419461b49c5
hex19c1542d2b23

28318131628835 has 32 divisors (see below), whose sum is σ = 37876266792000. Its totient is φ = 20198689873920.

The previous prime is 28318131628763. The next prime is 28318131628847. The reversal of 28318131628835 is 53882613181382.

It is not a de Polignac number, because 28318131628835 - 210 = 28318131627811 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33250625 + ... + 34091645.

It is an arithmetic number, because the mean of its divisors is an integer number (1183633337250).

Almost surely, 228318131628835 is an apocalyptic number.

28318131628835 is a deficient number, since it is larger than the sum of its proper divisors (9558135163165).

28318131628835 is a wasteful number, since it uses less digits than its factorization.

28318131628835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861911.

The product of its digits is 13271040, while the sum is 59.

The spelling of 28318131628835 in words is "twenty-eight trillion, three hundred eighteen billion, one hundred thirty-one million, six hundred twenty-eight thousand, eight hundred thirty-five".

Divisors: 1 5 17 19 85 95 323 1615 20849 104245 354433 396131 841021 1772165 1980655 4205105 6734227 14297357 15979399 33671135 71486785 79896995 271649783 1358248915 17534446829 87672234145 298085596093 333154489751 1490427980465 1665772448755 5663626325767 28318131628835