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1028131838822 = 211421111005381
BaseRepresentation
bin11101111011000010110…
…11101101101101100110
310122021210021102220111102
432331201123231231212
5113321103222320242
62104152305240102
7134165031302564
oct16754133555546
93567707386442
101028131838822
1136703468a870
12147313333032
1375c4c5c700a
1437a94714a34
151bb26370e32
hexef616edb66

1028131838822 has 16 divisors (see below), whose sum is σ = 1686393763344. Its totient is φ = 466222596000.

The previous prime is 1028131838821. The next prime is 1028131838843. The reversal of 1028131838822 is 2288381318201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028131838821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55493429 + ... + 55511952.

It is an arithmetic number, because the mean of its divisors is an integer number (105399610209).

Almost surely, 21028131838822 is an apocalyptic number.

1028131838822 is a deficient number, since it is larger than the sum of its proper divisors (658261924522).

1028131838822 is a wasteful number, since it uses less digits than its factorization.

1028131838822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111005815.

The product of its (nonzero) digits is 294912, while the sum is 47.

The spelling of 1028131838822 in words is "one trillion, twenty-eight billion, one hundred thirty-one million, eight hundred thirty-eight thousand, eight hundred twenty-two".

Divisors: 1 2 11 22 421 842 4631 9262 111005381 222010762 1221059191 2442118382 46733265401 93466530802 514065919411 1028131838822