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57828169 = 717677253
BaseRepresentation
bin1101110010011…
…0001101001001
311000210222100001
43130212031021
5104301000134
65423243001
71301350150
oct334461511
9130728301
1057828169
112a708183
1217449461
13bc99569
147974597
155124414
hex3726349

57828169 has 16 divisors (see below), whose sum is σ = 71031168. Its totient is φ = 45948672.

The previous prime is 57828131. The next prime is 57828193. The reversal of 57828169 is 96182875.

57828169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57828169 - 219 = 57303881 is a prime.

It is a super-2 number, since 2×578281692 = 6688194259785122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57828109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4347 + ... + 11599.

It is an arithmetic number, because the mean of its divisors is an integer number (4439448).

Almost surely, 257828169 is an apocalyptic number.

It is an amenable number.

57828169 is a deficient number, since it is larger than the sum of its proper divisors (13202999).

57828169 is a wasteful number, since it uses less digits than its factorization.

57828169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344.

The product of its digits is 241920, while the sum is 46.

The square root of 57828169 is about 7604.4834801583. The cubic root of 57828169 is about 386.7050235268.

It can be divided in two parts, 578281 and 69, that added together give a triangular number (578350 = T1075).

The spelling of 57828169 in words is "fifty-seven million, eight hundred twenty-eight thousand, one hundred sixty-nine".

Divisors: 1 7 17 67 119 469 1139 7253 7973 50771 123301 485951 863107 3401657 8261167 57828169