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28302703268 = 22723313973571
BaseRepresentation
bin11010010110111110…
…001111101010100100
32201001110112021222012
4122112332033222210
5430430443001033
621000241053352
72021240002610
oct322676175244
981043467865
1028302703268
1111004157964
12559a627258
1328908540c8
141526c68340
15b09b0b248
hex696f8faa4

28302703268 has 96 divisors (see below), whose sum is σ = 61142581248. Its totient is φ = 11196662400.

The previous prime is 28302703267. The next prime is 28302703277. The reversal of 28302703268 is 86230720382.

It is not an unprimeable number, because it can be changed into a prime (28302703267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7923923 + ... + 7927493.

It is an arithmetic number, because the mean of its divisors is an integer number (636901888).

Almost surely, 228302703268 is an apocalyptic number.

28302703268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28302703268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30571290624).

28302703268 is an abundant number, since it is smaller than the sum of its proper divisors (32839877980).

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

28302703268 is a wasteful number, since it uses less digits than its factorization.

28302703268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 28302703268 in words is "twenty-eight billion, three hundred two million, seven hundred three thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 23 28 31 46 62 92 124 161 217 322 397 434 644 713 794 868 1426 1588 2779 2852 3571 4991 5558 7142 9131 9982 11116 12307 14284 18262 19964 24614 24997 36524 49228 49994 63917 82133 86149 99988 110701 127834 164266 172298 221402 255668 283061 328532 344596 442804 566122 574931 774907 1132244 1149862 1417687 1549814 1981427 2299724 2546123 2835374 3099628 3962854 5092246 5670748 7925708 9923809 10184492 17822861 19847618 32606801 35645722 39695236 43948297 65213602 71291444 87896594 130427204 175793188 228247607 307638079 456495214 615276158 912990428 1010810831 1230552316 2021621662 4043243324 7075675817 14151351634 28302703268