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57980286 = 2367131923
BaseRepresentation
bin1101110100101…
…1010101111110
311001002201000000
43131023111332
5104320332121
65430415130
71302552510
oct335132576
9131081000
1057980286
112a8014a1
12175014a6
13c020880
1479b3bb0
155154526
hex374b57e

57980286 has 224 divisors, whose sum is σ = 176279040. Its totient is φ = 13856832.

The previous prime is 57980269. The next prime is 57980287. The reversal of 57980286 is 68208975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57980287) by changing a digit.

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 111 ways as a sum of consecutive naturals, for example, 2520871 + ... + 2520893.

It is an arithmetic number, because the mean of its divisors is an integer number (786960).

Almost surely, 257980286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57980286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88139520).

57980286 is an abundant number, since it is smaller than the sum of its proper divisors (118298754).

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

57980286 is a wasteful number, since it uses less digits than its factorization.

57980286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 57980286 is about 7614.4787083555. The cubic root of 57980286 is about 387.0438025055.

The spelling of 57980286 in words is "fifty-seven million, nine hundred eighty thousand, two hundred eighty-six".