Search a number
-
+
361987068820 = 225133171632557
BaseRepresentation
bin1010100010010000001…
…11000101001110010100
31021121100111112101110211
411101020013011032110
521412322142200240
6434143343055204
735103243213526
oct5211007051624
91247314471424
10361987068820
1112a5772995a3
125a1a48a1504
132819b156360
141373d885a16
1596395bcbea
hex54481c5394

361987068820 has 96 divisors (see below), whose sum is σ = 856959215616. Its totient is φ = 127523289600.

The previous prime is 361987068811. The next prime is 361987068869. The reversal of 361987068820 is 28860789163.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255982 + ... + 888538.

It is an arithmetic number, because the mean of its divisors is an integer number (8926658496).

Almost surely, 2361987068820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361987068820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428479607808).

361987068820 is an abundant number, since it is smaller than the sum of its proper divisors (494972146796).

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

361987068820 is a wasteful number, since it uses less digits than its factorization.

361987068820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632681 (or 632679 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 361987068820 in words is "three hundred sixty-one billion, nine hundred eighty-seven million, sixty-eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 31 52 62 65 71 124 130 142 155 260 284 310 355 403 620 710 806 923 1420 1612 1846 2015 2201 3692 4030 4402 4615 8060 8804 9230 11005 18460 22010 28613 44020 57226 114452 143065 286130 572260 632557 1265114 2530228 3162785 6325570 8223241 12651140 16446482 19609267 32892964 39218534 41116205 44911547 78437068 82232410 89823094 98046335 164464820 179646188 196092670 224557735 254920471 392185340 449115470 509840942 583850111 898230940 1019681884 1167700222 1274602355 1392257957 2335400444 2549204710 2784515914 2919250555 5098409420 5569031828 5838501110 6961289785 11677002220 13922579570 18099353441 27845159140 36198706882 72397413764 90496767205 180993534410 361987068820