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28701286606080 = 2838511973203
BaseRepresentation
bin1101000011010100010011…
…11111100010010100000000
310202121211001000022200000000
412201222021333202110000
512230220213332343310
6141013104500000000
76021412431601614
oct641521177422400
9122554030280000
1028701286606080
119166169059080
123276602990000
13130269aa704aa
14713214a37344
1534b8bdcea4c0
hex1a1a89fe2500

28701286606080 has 1296 divisors, whose sum is σ = 113687106047424. Its totient is φ = 6884006952960.

The previous prime is 28701286606079. The next prime is 28701286606087. The reversal of 28701286606080 is 8060668210782.

28701286606080 is a `hidden beast` number, since 2 + 8 + 7 + 0 + 1 + 28 + 6 + 6 + 0 + 608 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28701286606087) 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 143 ways as a sum of consecutive naturals, for example, 8960749759 + ... + 8960752961.

It is an arithmetic number, because the mean of its divisors is an integer number (87721532444).

Almost surely, 228701286606080 is an apocalyptic number.

28701286606080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28701286606080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56843553023712).

28701286606080 is an abundant number, since it is smaller than the sum of its proper divisors (84985819441344).

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

28701286606080 is an frugal number, since it uses more digits than its factorization.

28701286606080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356 (or 3321 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 28701286606080 in words is "twenty-eight trillion, seven hundred one billion, two hundred eighty-six million, six hundred six thousand, eighty".