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2680280 = 235371811
BaseRepresentation
bin1010001110010111011000
312001011122122
422032113120
51141232110
6133240412
731532141
oct12162730
95034578
102680280
111570809
12a93108
1372ac85
144daac8
1537e255
hex28e5d8

2680280 has 32 divisors (see below), whose sum is σ = 6197040. Its totient is φ = 1042560.

The previous prime is 2680277. The next prime is 2680283. The reversal of 2680280 is 820862.

2680280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2680277) and next prime (2680283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575 + ... + 2385.

22680280 is an apocalyptic number.

2680280 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 2680280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3098520).

2680280 is an abundant number, since it is smaller than the sum of its proper divisors (3516760).

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

2680280 is a wasteful number, since it uses less digits than its factorization.

2680280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2680280 is about 1637.1560707520. The cubic root of 2680280 is about 138.9078284098.

The spelling of 2680280 in words is "two million, six hundred eighty thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 740 1480 1811 3622 7244 9055 14488 18110 36220 67007 72440 134014 268028 335035 536056 670070 1340140 2680280