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57430289 = 712764601
BaseRepresentation
bin1101101100010…
…1000100010001
311000001202112202
43123011010101
5104200232124
65410532545
71265102150
oct333050421
9130052482
1057430289
112a466254
1217297155
13bb8a427
1478ad597
1550965ae
hex36c5111

57430289 has 8 divisors (see below), whose sum is σ = 66152448. Its totient is φ = 48837600.

The previous prime is 57430277. The next prime is 57430297. The reversal of 57430289 is 98203475.

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

It is a de Polignac number, because none of the positive numbers 2k-57430289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57430489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31412 + ... + 33189.

It is an arithmetic number, because the mean of its divisors is an integer number (8269056).

Almost surely, 257430289 is an apocalyptic number.

It is an amenable number.

57430289 is a deficient number, since it is larger than the sum of its proper divisors (8722159).

57430289 is a wasteful number, since it uses less digits than its factorization.

57430289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64735.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 57430289 is about 7578.2774427966. The cubic root of 57430289 is about 385.8160886618.

The spelling of 57430289 in words is "fifty-seven million, four hundred thirty thousand, two hundred eighty-nine".

Divisors: 1 7 127 889 64601 452207 8204327 57430289