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2280688280 = 235132328291
BaseRepresentation
bin1000011111110000…
…1000101010011000
312212221111222011022
42013330020222120
514132324011110
61014151022012
7110342346653
oct20774105230
95787458138
102280688280
11a70430952
1253796a908
132a46730c0
14178c8289a
15d5359755
hex87f08a98

2280688280 has 96 divisors (see below), whose sum is σ = 5777699760. Its totient is φ = 805390080.

The previous prime is 2280688273. The next prime is 2280688297. The reversal of 2280688280 is 828860822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270935 + ... + 279225.

Almost surely, 22280688280 is an apocalyptic number.

2280688280 is a gapful number since it is divisible by the number (20) 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 2280688280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2888849880).

2280688280 is an abundant number, since it is smaller than the sum of its proper divisors (3497011480).

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

2280688280 is a wasteful number, since it uses less digits than its factorization.

2280688280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 44.

The square root of 2280688280 is about 47756.5522206116. The cubic root of 2280688280 is about 1316.3013001786.

The spelling of 2280688280 in words is "two billion, two hundred eighty million, six hundred eighty-eight thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 23 26 40 46 52 65 92 104 115 130 184 230 260 299 460 520 529 598 920 1058 1196 1495 2116 2392 2645 2990 4232 5290 5980 6877 8291 10580 11960 13754 16582 21160 27508 33164 34385 41455 55016 66328 68770 82910 107783 137540 165820 190693 215566 275080 331640 381386 431132 538915 762772 862264 953465 1077830 1525544 1906930 2155660 2479009 3813860 4311320 4385939 4958018 7627720 8771878 9916036 12395045 17543756 19832072 21929695 24790090 35087512 43859390 49580180 57017207 87718780 99160360 114034414 175437560 228068828 285086035 456137656 570172070 1140344140 2280688280