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28872142420608 = 27322959711032003
BaseRepresentation
bin1101001000010010100011…
…10010101111101010000000
310210020011001020200022221200
412210021101302233222000
512241020121424424413
6141223402405021200
76036641414216064
oct644112162575200
9123204036608850
1028872142420608
119221674779383
1232a37460b4800
1313158290c02b6
1471b5c2207aa4
1535106d845573
hex1a4251cafa80

28872142420608 has 768 divisors, whose sum is σ = 89540515584000. Its totient is φ = 8914141716480.

The previous prime is 28872142420607. The next prime is 28872142420619. The reversal of 28872142420608 is 80602424127882.

It is a happy number.

28872142420608 is a `hidden beast` number, since 2 + 8 + 8 + 7 + 2 + 1 + 4 + 2 + 4 + 20 + 608 = 666.

It is not an unprimeable number, because it can be changed into a prime (28872142420601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14414448535 + ... + 14414450537.

It is an arithmetic number, because the mean of its divisors is an integer number (116589213000).

Almost surely, 228872142420608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28872142420608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44770257792000).

28872142420608 is an abundant number, since it is smaller than the sum of its proper divisors (60668373163392).

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

28872142420608 is a wasteful number, since it uses less digits than its factorization.

28872142420608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 54.

The spelling of 28872142420608 in words is "twenty-eight trillion, eight hundred seventy-two billion, one hundred forty-two million, four hundred twenty thousand, six hundred eight".