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54168020 = 2252708401
BaseRepresentation
bin1100111010100…
…0100111010100
310202221000112222
43032220213110
5102331334040
65213001512
71225264154
oct316504724
9122830488
1054168020
1128638265
1216183298
13b2b75aa
1472a0764
154b4ebb5
hex33a89d4

54168020 has 12 divisors (see below), whose sum is σ = 113752884. Its totient is φ = 21667200.

The previous prime is 54167989. The next prime is 54168029. The reversal of 54168020 is 2086145.

54168020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16370116 + 37797904 = 4046^2 + 6148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54168029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354181 + ... + 1354220.

It is an arithmetic number, because the mean of its divisors is an integer number (9479407).

Almost surely, 254168020 is an apocalyptic number.

It is an amenable number.

54168020 is an abundant number, since it is smaller than the sum of its proper divisors (59584864).

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

54168020 is a wasteful number, since it uses less digits than its factorization.

54168020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708410 (or 2708408 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 54168020 is about 7359.8926622608. The cubic root of 54168020 is about 378.3679311815.

The spelling of 54168020 in words is "fifty-four million, one hundred sixty-eight thousand, twenty".

Divisors: 1 2 4 5 10 20 2708401 5416802 10833604 13542005 27084010 54168020