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57218373390 = 23517182361543
BaseRepresentation
bin110101010010011110…
…110001011100001110
312110200122110112101110
4311102132301130032
51414140400422030
642141420152450
74063632102063
oct652236613416
9173618415343
1057218373390
11222a23098a2
12b10a398726
13551b393b99
142aab292c6a
15174d4471b0
hexd527b170e

57218373390 has 64 divisors (see below), whose sum is σ = 145484107776. Its totient is φ = 14352579072.

The previous prime is 57218373367. The next prime is 57218373409. The reversal of 57218373390 is 9337381275.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 898959 + ... + 960501.

It is an arithmetic number, because the mean of its divisors is an integer number (2273189184).

Almost surely, 257218373390 is an apocalyptic number.

57218373390 is an abundant number, since it is smaller than the sum of its proper divisors (88265734386).

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

57218373390 is a wasteful number, since it uses less digits than its factorization.

57218373390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63393.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 57218373390 in words is "fifty-seven billion, two hundred eighteen million, three hundred seventy-three thousand, three hundred ninety".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 1823 3646 5469 9115 10938 18230 27345 30991 54690 61543 61982 92973 123086 154955 184629 185946 307715 309910 369258 464865 615430 923145 929730 1046231 1846290 2092462 3138693 5231155 6277386 10462310 15693465 31386930 112192889 224385778 336578667 560964445 673157334 1121928890 1682893335 1907279113 3365786670 3814558226 5721837339 9536395565 11443674678 19072791130 28609186695 57218373390