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2080785380 = 2251719292383
BaseRepresentation
bin111110000000110…
…0100001111100100
312101000100211221012
41330001210033210
513230140113010
6542250241352
7102364245452
oct17401441744
95330324835
102080785380
11978604943
124a0a26258
1327212106b
1415a4c79d2
15c2a1e005
hex7c0643e4

2080785380 has 144 divisors (see below), whose sum is σ = 5057095680. Its totient is φ = 714663936.

The previous prime is 2080785331. The next prime is 2080785389. The reversal of 2080785380 is 835870802.

It is not an unprimeable number, because it can be changed into a prime (2080785389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5432669 + ... + 5433051.

It is an arithmetic number, because the mean of its divisors is an integer number (35118720).

Almost surely, 22080785380 is an apocalyptic number.

2080785380 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 2080785380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528547840).

2080785380 is an abundant number, since it is smaller than the sum of its proper divisors (2976310300).

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

2080785380 is a wasteful number, since it uses less digits than its factorization.

2080785380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 2080785380 is about 45615.6264891758. The cubic root of 2080785380 is about 1276.6615027351.

The spelling of 2080785380 in words is "two billion, eighty million, seven hundred eighty-five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 17 19 20 29 34 38 58 68 76 85 95 116 145 170 190 290 323 340 380 383 493 551 580 646 766 841 986 1102 1292 1532 1615 1682 1915 1972 2204 2465 2755 3230 3364 3830 4205 4930 5510 6460 6511 7277 7660 8410 9367 9860 11020 11107 13022 14297 14554 15979 16820 18734 22214 26044 28594 29108 31958 32555 36385 37468 44428 46835 55535 57188 63916 65110 71485 72770 79895 93670 111070 123709 130220 142970 145540 159790 187340 188819 211033 222140 247418 271643 285940 319580 322103 377638 422066 494836 543286 618545 644206 755276 844132 944095 1055165 1086572 1237090 1288412 1358215 1610515 1888190 2110330 2474180 2716430 3221030 3587561 3776380 4220660 5432860 5475751 6119957 6442060 7175122 10951502 12239914 14350244 17937805 21903004 24479828 27378755 30599785 35875610 54757510 61199570 71751220 104039269 109515020 122399140 208078538 416157076 520196345 1040392690 2080785380