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54805668 = 22319972287
BaseRepresentation
bin1101000100010…
…0010010100100
310211010102020120
43101010102210
5103012240133
65234401540
71233561201
oct321042244
9124112216
1054805668
1128a33345
12164302b0
13b47b8b8
1473c8ca8
154c28ab3
hex34444a4

54805668 has 24 divisors (see below), whose sum is σ = 127999872. Its totient is φ = 18251424.

The previous prime is 54805661. The next prime is 54805687. The reversal of 54805668 is 86650845.

It is a super-2 number, since 2×548056682 = 6007322489852448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54805661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22821 + ... + 25107.

It is an arithmetic number, because the mean of its divisors is an integer number (5333328).

Almost surely, 254805668 is an apocalyptic number.

It is an amenable number.

54805668 is an abundant number, since it is smaller than the sum of its proper divisors (73194204).

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

54805668 is a wasteful number, since it uses less digits than its factorization.

54805668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291 (or 4289 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 54805668 is about 7403.0850326063. The cubic root of 54805668 is about 379.8468172982.

The spelling of 54805668 in words is "fifty-four million, eight hundred five thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 12 1997 2287 3994 4574 5991 6861 7988 9148 11982 13722 23964 27444 4567139 9134278 13701417 18268556 27402834 54805668