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57140086 = 294730169
BaseRepresentation
bin1101100111111…
…0001101110110
310222112000110111
43121332031312
5104111440321
65400413234
71262453113
oct331761566
9128460414
1057140086
112a288213
121717721a
13bab8303
14783590a
15503a5e1
hex367e376

57140086 has 8 divisors (see below), whose sum is σ = 85803480. Its totient is φ = 28538928.

The previous prime is 57140059. The next prime is 57140107. The reversal of 57140086 is 68004175.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13191 + ... + 16978.

It is an arithmetic number, because the mean of its divisors is an integer number (10725435).

Almost surely, 257140086 is an apocalyptic number.

57140086 is a deficient number, since it is larger than the sum of its proper divisors (28663394).

57140086 is a wasteful number, since it uses less digits than its factorization.

57140086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31118.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 57140086 is about 7559.1061640911. The cubic root of 57140086 is about 385.1651307152.

The spelling of 57140086 in words is "fifty-seven million, one hundred forty thousand, eighty-six".

Divisors: 1 2 947 1894 30169 60338 28570043 57140086