Search a number
-
+
87055291284 = 2231319291012789
BaseRepresentation
bin101000100010011100…
…1100101001110010100
322022201000220000011120
41101010321211032110
52411242123310114
6103554225003540
76201211523643
oct1210471451624
9268630800146
1087055291284
1133a13495925
1214a567835b0
138294a296a0
1442dbba935a
1523e7aaa5a9
hex1444e65394

87055291284 has 96 divisors (see below), whose sum is σ = 238208208000. Its totient is φ = 24501367296.

The previous prime is 87055291261. The next prime is 87055291321. The reversal of 87055291284 is 48219255078.

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, 420439 + ... + 592350.

It is an arithmetic number, because the mean of its divisors is an integer number (2481335500).

Almost surely, 287055291284 is an apocalyptic number.

It is an amenable number.

87055291284 is an abundant number, since it is smaller than the sum of its proper divisors (151152916716).

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

87055291284 is a wasteful number, since it uses less digits than its factorization.

87055291284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012857 (or 1012855 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 87055291284 in words is "eighty-seven billion, fifty-five million, two hundred ninety-one thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 13 19 26 29 38 39 52 57 58 76 78 87 114 116 156 174 228 247 348 377 494 551 741 754 988 1102 1131 1482 1508 1653 2204 2262 2964 3306 4524 6612 7163 14326 21489 28652 42978 85956 1012789 2025578 3038367 4051156 6076734 12153468 13166257 19242991 26332514 29370881 38485982 39498771 52665028 57728973 58741762 76971964 78997542 88112643 115457946 117483524 157995084 176225286 230915892 250158883 352450572 381821453 500317766 558046739 750476649 763642906 1000635532 1116093478 1145464359 1500953298 1527285812 1674140217 2232186956 2290928718 3001906596 3348280434 4581857436 6696560868 7254607607 14509215214 21763822821 29018430428 43527645642 87055291284