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57406943 = 1117378297
BaseRepresentation
bin1101101011111…
…1010111011111
311000000120112002
43122333113133
5104144010233
65410232515
71264644116
oct332772737
9130016462
1057406943
112a44a760
121728573b
13bb7c909
1478a4c7d
15508e6e8
hex36bf5df

57406943 has 16 divisors (see below), whose sum is σ = 68109984. Its totient is φ = 47784960.

The previous prime is 57406933. The next prime is 57406967. The reversal of 57406943 is 34960475.

It is not a de Polignac number, because 57406943 - 26 = 57406879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57406897 and 57406906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57406903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2771 + ... + 11067.

It is an arithmetic number, because the mean of its divisors is an integer number (4256874).

Almost surely, 257406943 is an apocalyptic number.

57406943 is a deficient number, since it is larger than the sum of its proper divisors (10703041).

57406943 is a wasteful number, since it uses less digits than its factorization.

57406943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8362.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 57406943 is about 7576.7369625717. The cubic root of 57406943 is about 385.7638021805.

The spelling of 57406943 in words is "fifty-seven million, four hundred six thousand, nine hundred forty-three".

Divisors: 1 11 17 37 187 407 629 6919 8297 91267 141049 306989 1551539 3376879 5218813 57406943