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28888887143016 = 23322233391796527
BaseRepresentation
bin1101001000110001101111…
…10110110010101001101000
310210021202021012211100211200
412210120313312302221220
512241303420102034031
6141235212130324200
76041103361054545
oct644306766625150
9123252235740750
1028888887143016
11922878772a13a
1232a6a39a29660
131317297243a74
1471c330035bcc
153516ed8e48e6
hex1a4637db2a68

28888887143016 has 48 divisors (see below), whose sum is σ = 78241129886400. Its totient is φ = 9629580570912.

The previous prime is 28888887142991. The next prime is 28888887143021. The reversal of 28888887143016 is 61034178888882.

28888887143016 is a `hidden beast` number, since 28 + 8 + 8 + 88 + 87 + 1 + 430 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15182145 + ... + 16978671.

It is an arithmetic number, because the mean of its divisors is an integer number (1630023539300).

Almost surely, 228888887143016 is an apocalyptic number.

It is an amenable number.

28888887143016 is an abundant number, since it is smaller than the sum of its proper divisors (49352242743384).

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

28888887143016 is a wasteful number, since it uses less digits than its factorization.

28888887143016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019878 (or 2019871 counting only the distinct ones).

The product of its (nonzero) digits is 264241152, while the sum is 72.

The spelling of 28888887143016 in words is "twenty-eight trillion, eight hundred eighty-eight billion, eight hundred eighty-seven million, one hundred forty-three thousand, sixteen".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 223339 446678 670017 893356 1340034 1786712 1796527 2010051 2680068 3593054 4020102 5360136 5389581 7186108 8040204 10779162 14372216 16080408 16168743 21558324 32337486 43116648 64674972 129349944 401234543653 802469087306 1203703630959 1604938174612 2407407261918 3209876349224 3611110892877 4814814523836 7222221785754 9629629047672 14444443571508 28888887143016