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1028547081388 = 22257136770347
BaseRepresentation
bin11101111011110100010…
…11101111010010101100
310122022212012210102012201
432331322023233102230
5113322431023101023
62104301421311244
7134211232640401
oct16757213572254
93568765712181
101028547081388
11367228016742
1214740a405524
1375cb7644488
1437ad39262a8
151bb4ca45bad
hexef7a2ef4ac

1028547081388 has 6 divisors (see below), whose sum is σ = 1799957392436. Its totient is φ = 514273540692.

The previous prime is 1028547081329. The next prime is 1028547081391. The reversal of 1028547081388 is 8831807458201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128568385170 + ... + 128568385177.

Almost surely, 21028547081388 is an apocalyptic number.

It is an amenable number.

1028547081388 is a deficient number, since it is larger than the sum of its proper divisors (771410311048).

1028547081388 is a wasteful number, since it uses less digits than its factorization.

1028547081388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257136770351 (or 257136770349 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 1028547081388 in words is "one trillion, twenty-eight billion, five hundred forty-seven million, eighty-one thousand, three hundred eighty-eight".

Divisors: 1 2 4 257136770347 514273540694 1028547081388