Search a number
-
+
28219053769088 = 277213593583631
BaseRepresentation
bin1100110101010010000101…
…01011010000000110000000
310200220201022101011100110212
412122221002223100012000
512144320110231102323
6140003353200413252
75641521313244300
oct632510253200600
9120821271140425
1028219053769088
118a9a6a7202176
1231b9060017228
13129907883c630
146d7b49351600
1533e097dcbb78
hex19aa42ad0180

28219053769088 has 192 divisors, whose sum is σ = 70545385753920. Its totient is φ = 11144737013760.

The previous prime is 28219053769031. The next prime is 28219053769099. The reversal of 28219053769088 is 88096735091282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48059033 + ... + 48642663.

It is an arithmetic number, because the mean of its divisors is an integer number (367423884135).

Almost surely, 228219053769088 is an apocalyptic number.

28219053769088 is a gapful number since it is divisible by the number (28) 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 28219053769088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35272692876960).

28219053769088 is an abundant number, since it is smaller than the sum of its proper divisors (42326331984832).

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

28219053769088 is a wasteful number, since it uses less digits than its factorization.

28219053769088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584265 (or 584246 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 68.

The spelling of 28219053769088 in words is "twenty-eight trillion, two hundred nineteen billion, fifty-three million, seven hundred sixty-nine thousand, eighty-eight".