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11230230280 = 235299681233
BaseRepresentation
bin10100111010101111…
…11011011100001000
31001222122122210210211
422131113323130020
5140444414332110
65054210450504
7545203245103
oct123527733410
931878583724
1011230230280
114843199255
122214b93a34
13109c837699
147876c173a
1545adba98a
hex29d5fb708

11230230280 has 32 divisors (see below), whose sum is σ = 26139331800. Its totient is φ = 4337191936.

The previous prime is 11230230241. The next prime is 11230230281. The reversal of 11230230280 is 8203203211.

It can be written as a sum of positive squares in 4 ways, for example, as 6158796484 + 5071433796 = 78478^2 + 71214^2 .

It is a super-2 number, since 2×112302302802 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11230230281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4839457 + ... + 4841776.

Almost surely, 211230230280 is an apocalyptic number.

11230230280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11230230280 is an abundant number, since it is smaller than the sum of its proper divisors (14909101520).

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

11230230280 is a wasteful number, since it uses less digits than its factorization.

11230230280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681273 (or 9681269 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 11230230280 its reverse (8203203211), we get a palindrome (19433433491).

The spelling of 11230230280 in words is "eleven billion, two hundred thirty million, two hundred thirty thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 29 40 58 116 145 232 290 580 1160 9681233 19362466 38724932 48406165 77449864 96812330 193624660 280755757 387249320 561511514 1123023028 1403778785 2246046056 2807557570 5615115140 11230230280