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57291230 = 255729123
BaseRepresentation
bin1101101010001…
…1000111011110
310222210200210102
43122203013132
5104131304410
65403541102
71263652553
oct332430736
9128720712
1057291230
112a380827
121722a792
13bb3c049
147874a2a
15506a2a5
hex36a31de

57291230 has 8 divisors (see below), whose sum is σ = 103124232. Its totient is φ = 22916488.

The previous prime is 57291217. The next prime is 57291233. The reversal of 57291230 is 3219275.

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

It is a junction number, because it is equal to n+sod(n) for n = 57291193 and 57291202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57291233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2864552 + ... + 2864571.

It is an arithmetic number, because the mean of its divisors is an integer number (12890529).

Almost surely, 257291230 is an apocalyptic number.

57291230 is a deficient number, since it is larger than the sum of its proper divisors (45833002).

57291230 is a wasteful number, since it uses less digits than its factorization.

57291230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729130.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 57291230 is about 7569.0970399381. The cubic root of 57291230 is about 385.5044380120.

The spelling of 57291230 in words is "fifty-seven million, two hundred ninety-one thousand, two hundred thirty".

Divisors: 1 2 5 10 5729123 11458246 28645615 57291230