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2020648280 = 235728312421
BaseRepresentation
bin111100001110000…
…1010010101011000
312012211012120100012
41320130022111120
513114241221110
6532301301052
7101034140600
oct17034122530
95184176305
102020648280
1194766aa62
12484864788
13262826891
14152511c00
15bc5e0905
hex7870a558

2020648280 has 96 divisors (see below), whose sum is σ = 5352888240. Its totient is φ = 684391680.

The previous prime is 2020648277. The next prime is 2020648313. The reversal of 2020648280 is 828460202.

It is a happy number.

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, 156470 + ... + 168890.

Almost surely, 22020648280 is an apocalyptic number.

2020648280 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 2020648280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676444120).

2020648280 is an abundant number, since it is smaller than the sum of its proper divisors (3332239960).

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

2020648280 is a wasteful number, since it uses less digits than its factorization.

2020648280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12529 (or 12518 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2020648280 is about 44951.6215502845. The cubic root of 2020648280 is about 1264.2420806301.

It can be divided in two parts, 20206 and 48280, that added together give a palindrome (68486).

The spelling of 2020648280 in words is "two billion, twenty million, six hundred forty-eight thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 83 98 140 166 196 245 280 332 392 415 490 581 664 830 980 1162 1660 1960 2324 2905 3320 4067 4648 5810 8134 11620 12421 16268 20335 23240 24842 32536 40670 49684 62105 81340 86947 99368 124210 162680 173894 248420 347788 434735 496840 608629 695576 869470 1030943 1217258 1738940 2061886 2434516 3043145 3477880 4123772 4869032 5154715 6086290 7216601 8247544 10309430 12172580 14433202 20618860 24345160 28866404 36083005 41237720 50516207 57732808 72166010 101032414 144332020 202064828 252581035 288664040 404129656 505162070 1010324140 2020648280