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42878306082580 = 2257154155815139
BaseRepresentation
bin10011011111111011000100…
…01100111101111100010100
312121211010101212121202101221
421233331202030331330110
521110004232324120310
6231110004420500124
712013566253055503
oct1157754214757424
9177733355552357
1042878306082580
1112731650a48481
124986129b4a644
131ac0539cb34b7
14a8346d0c883a
154e556a908ada
hex26ff6233df14

42878306082580 has 48 divisors (see below), whose sum is σ = 91481460981120. Its totient is φ = 16878497731200.

The previous prime is 42878306082511. The next prime is 42878306082607. The reversal of 42878306082580 is 8528060387824.

It is a super-2 number, since 2×428783060825802 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27139350 + ... + 28675789.

It is an arithmetic number, because the mean of its divisors is an integer number (1905863770440).

Almost surely, 242878306082580 is an apocalyptic number.

It is an amenable number.

42878306082580 is an abundant number, since it is smaller than the sum of its proper divisors (48603154898540).

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

42878306082580 is a wasteful number, since it uses less digits than its factorization.

42878306082580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55815760 (or 55815758 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 61.

The spelling of 42878306082580 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred six million, eighty-two thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 71 142 284 355 541 710 1082 1420 2164 2705 5410 10820 38411 76822 153644 192055 384110 768220 55815139 111630278 223260556 279075695 558151390 1116302780 3962874869 7925749738 15851499476 19814374345 30195990199 39628748690 60391980398 79257497380 120783960796 150979950995 301959901990 603919803980 2143915304129 4287830608258 8575661216516 10719576520645 21439153041290 42878306082580