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28590178960 = 2457229475351
BaseRepresentation
bin11010101000000110…
…111000001010010000
32201210111110120111001
4122220012320022100
5432023041211320
621044550431344
72031330340300
oct325006701220
981714416431
1028590178960
1111141457682
12565a962554
132908288375
1415530db600
15b24e9420a
hex6a81b8290

28590178960 has 240 divisors, whose sum is σ = 81708341760. Its totient is φ = 9261235200.

The previous prime is 28590178937. The next prime is 28590178987. The reversal of 28590178960 is 6987109582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5340285 + ... + 5345635.

It is an arithmetic number, because the mean of its divisors is an integer number (340451424).

Almost surely, 228590178960 is an apocalyptic number.

28590178960 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 28590178960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40854170880).

28590178960 is an abundant number, since it is smaller than the sum of its proper divisors (53118162800).

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

28590178960 is a wasteful number, since it uses less digits than its factorization.

28590178960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454 (or 5441 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 28590178960 in words is "twenty-eight billion, five hundred ninety million, one hundred seventy-eight thousand, nine hundred sixty".