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57143382 = 239523897
BaseRepresentation
bin1101100111111…
…1000001010110
310222112011222120
43121333001112
5104112042012
65400440410
71262465532
oct331770126
9128464876
1057143382
112a28a73a
1217179106
13bab996a
147836bc2
15503b58c
hex367f056

57143382 has 8 divisors (see below), whose sum is σ = 114286776. Its totient is φ = 19047792.

The previous prime is 57143363. The next prime is 57143407. The reversal of 57143382 is 28334175.

It is a sphenic number, since it is the product of 3 distinct primes.

57143382 is an admirable number.

It is a super-2 number, since 2×571433822 = 6530732212795848, which 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 3 ways as a sum of consecutive naturals, for example, 4761943 + ... + 4761954.

It is an arithmetic number, because the mean of its divisors is an integer number (14285847).

Almost surely, 257143382 is an apocalyptic number.

57143382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57143382 is a wasteful number, since it uses less digits than its factorization.

57143382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523902.

The product of its digits is 20160, while the sum is 33.

The square root of 57143382 is about 7559.3241761417. The cubic root of 57143382 is about 385.1725363735.

The spelling of 57143382 in words is "fifty-seven million, one hundred forty-three thousand, three hundred eighty-two".

Divisors: 1 2 3 6 9523897 19047794 28571691 57143382