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54000138 = 2323937657
BaseRepresentation
bin1100110111111…
…1101000001010
310202121111021010
43031333220022
5102311001023
65205224350
71223664543
oct315775012
9122544233
1054000138
1128533115
12161020b6
13b25905a
1472594ca
154b1a093
hex337fa0a

54000138 has 16 divisors (see below), whose sum is σ = 108455040. Its totient is φ = 17924256.

The previous prime is 54000103. The next prime is 54000139. The reversal of 54000138 is 83100045.

It is not an unprimeable number, because it can be changed into a prime (54000139) 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, 17395 + ... + 20262.

It is an arithmetic number, because the mean of its divisors is an integer number (6778440).

Almost surely, 254000138 is an apocalyptic number.

54000138 is an abundant number, since it is smaller than the sum of its proper divisors (54454902).

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

54000138 is a wasteful number, since it uses less digits than its factorization.

54000138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37901.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 54000138 is about 7348.4786180542. The cubic root of 54000138 is about 377.9766369480.

The spelling of 54000138 in words is "fifty-four million, one hundred thirty-eight", and thus it is an aban number.

Divisors: 1 2 3 6 239 478 717 1434 37657 75314 112971 225942 9000023 18000046 27000069 54000138