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10110031220 = 22510910494421
BaseRepresentation
bin10010110101001101…
…01101010101110100
3222002120210210120202
421122212231111310
5131201131444340
64351113020032
7505351563452
oct113246552564
928076723522
1010110031220
114318938103
121b619b4618
13c51733ac3
146bca059d2
153e2894c15
hex25a9ad574

10110031220 has 48 divisors (see below), whose sum is σ = 21451122000. Its totient is φ = 4002186240.

The previous prime is 10110031213. The next prime is 10110031357. The reversal of 10110031220 is 2213001101.

It can be written as a sum of positive squares in 8 ways, for example, as 1901308816 + 8208722404 = 43604^2 + 90602^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2284610 + ... + 2289030.

It is an arithmetic number, because the mean of its divisors is an integer number (446898375).

Almost surely, 210110031220 is an apocalyptic number.

10110031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10110031220 is an abundant number, since it is smaller than the sum of its proper divisors (11341090780).

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

10110031220 is a wasteful number, since it uses less digits than its factorization.

10110031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588 (or 5586 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10110031220 its reverse (2213001101), we get a palindrome (12323032321).

The spelling of 10110031220 in words is "ten billion, one hundred ten million, thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1049 1090 2098 2180 4196 4421 5245 8842 10490 17684 20980 22105 44210 88420 114341 228682 457364 481889 571705 963778 1143410 1927556 2286820 2409445 4637629 4818890 9275258 9637780 18550516 23188145 46376290 92752580 505501561 1011003122 2022006244 2527507805 5055015610 10110031220