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42831938560 = 21058365613
BaseRepresentation
bin100111111000111110…
…111000010000000000
311002120000211220212211
4213320332320100000
51200204434013220
631402101031504
73044262320305
oct477076702000
9132500756784
1042831938560
111718a570434
1283743b5594
1340679b2c58
1421047470ac
1511aa42eb5a
hex9f8fb8400

42831938560 has 44 divisors (see below), whose sum is σ = 102746471148. Its totient is φ = 17132773376.

The previous prime is 42831938533. The next prime is 42831938563. The reversal of 42831938560 is 6583913824.

It can be written as a sum of positive squares in 2 ways, for example, as 29331357696 + 13500580864 = 171264^2 + 116192^2 .

It is a super-2 number, since 2×428319385602 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42831938563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4177687 + ... + 4187926.

Almost surely, 242831938560 is an apocalyptic number.

42831938560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42831938560 is an abundant number, since it is smaller than the sum of its proper divisors (59914532588).

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

42831938560 is an equidigital number, since it uses as much as digits as its factorization.

42831938560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8365638 (or 8365620 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 42831938560 in words is "forty-two billion, eight hundred thirty-one million, nine hundred thirty-eight thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2560 5120 8365613 16731226 33462452 41828065 66924904 83656130 133849808 167312260 267699616 334624520 535399232 669249040 1070798464 1338498080 2141596928 2676996160 4283193856 5353992320 8566387712 10707984640 21415969280 42831938560