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57680224 = 257257501
BaseRepresentation
bin1101110000001…
…0000101100000
311000112110101121
43130002011200
5104231231344
65420142024
71300162630
oct334020540
9130473347
1057680224
112a617008
1217397914
13bc47114
1479366c0
1550e5684
hex3702160

57680224 has 24 divisors (see below), whose sum is σ = 129781008. Its totient is φ = 24720000.

The previous prime is 57680213. The next prime is 57680239. The reversal of 57680224 is 42208675.

It is a self number, because there is not a number n which added to its sum of digits gives 57680224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128527 + ... + 128974.

It is an arithmetic number, because the mean of its divisors is an integer number (5407542).

Almost surely, 257680224 is an apocalyptic number.

It is an amenable number.

57680224 is an abundant number, since it is smaller than the sum of its proper divisors (72100784).

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

57680224 is a wasteful number, since it uses less digits than its factorization.

57680224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257518 (or 257510 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 57680224 is about 7594.7497654630. The cubic root of 57680224 is about 386.3749656219.

Adding to 57680224 its reverse (42208675), we get a palindrome (99888899).

The spelling of 57680224 in words is "fifty-seven million, six hundred eighty thousand, two hundred twenty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 257501 515002 1030004 1802507 2060008 3605014 4120016 7210028 8240032 14420056 28840112 57680224