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2680331280 = 2435111015277
BaseRepresentation
bin1001111111000010…
…1001110000010000
320220210111221021220
42133300221300100
520442131100110
61121544445040
7123264303624
oct23760516020
96823457256
102680331280
111155a82620
12629779780
133393bb053
141b5d93184
1510a49c370
hex9fc29c10

2680331280 has 80 divisors (see below), whose sum is σ = 9064401984. Its totient is φ = 649776640.

The previous prime is 2680331279. The next prime is 2680331287. The reversal of 2680331280 is 821330862.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2680331287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504999 + ... + 510278.

Almost surely, 22680331280 is an apocalyptic number.

2680331280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2680331280 is an abundant number, since it is smaller than the sum of its proper divisors (6384070704).

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

2680331280 is a wasteful number, since it uses less digits than its factorization.

2680331280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015304 (or 1015298 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2680331280 is about 51771.9159390494. The cubic root of 2680331280 is about 1389.0871428093.

The spelling of 2680331280 in words is "two billion, six hundred eighty million, three hundred thirty-one thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 80 88 110 120 132 165 176 220 240 264 330 440 528 660 880 1320 2640 1015277 2030554 3045831 4061108 5076385 6091662 8122216 10152770 11168047 12183324 15229155 16244432 20305540 22336094 24366648 30458310 33504141 40611080 44672188 48733296 55840235 60916620 67008282 81222160 89344376 111680470 121833240 134016564 167520705 178688752 223360940 243666480 268033128 335041410 446721880 536066256 670082820 893443760 1340165640 2680331280