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12106238180 = 2251485140759
BaseRepresentation
bin10110100011001011…
…01000100011100100
31011020201000121201212
423101211220203210
5144243144110210
65321142410552
7606001220021
oct132145504344
934221017655
1012106238180
115152723a23
12241a430a58
1311ac18085a
1482bb94548
154acc58805
hex2d19688e4

12106238180 has 24 divisors (see below), whose sum is σ = 25425435840. Its totient is φ = 4842050400.

The previous prime is 12106238173. The next prime is 12106238197. The reversal of 12106238180 is 8183260121.

It is a super-2 number, since 2×121062381802 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276641 + ... + 317399.

It is an arithmetic number, because the mean of its divisors is an integer number (1059393160).

Almost surely, 212106238180 is an apocalyptic number.

12106238180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12106238180 is an abundant number, since it is smaller than the sum of its proper divisors (13319197660).

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

12106238180 is a wasteful number, since it uses less digits than its factorization.

12106238180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55619 (or 55617 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 12106238180 in words is "twelve billion, one hundred six million, two hundred thirty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 14851 29702 40759 59404 74255 81518 148510 163036 203795 297020 407590 815180 605311909 1210623818 2421247636 3026559545 6053119090 12106238180