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12011100 = 2235240037
BaseRepresentation
bin101101110100…
…011001011100
3211121020010120
4231310121130
511033323400
61105234540
7204043533
oct55643134
924536116
1012011100
116864132
124032a50
13264707a
14184931a
1510c3ca0
hexb7465c

12011100 has 36 divisors (see below), whose sum is σ = 34752984. Its totient is φ = 3202880.

The previous prime is 12011099. The next prime is 12011113. The reversal of 12011100 is 111021.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19719 + ... + 20318.

Almost surely, 212011100 is an apocalyptic number.

12011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011100 is an abundant number, since it is smaller than the sum of its proper divisors (22741884).

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

12011100 is a wasteful number, since it uses less digits than its factorization.

12011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40054 (or 40047 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 12011100 is about 3465.7033918095. The cubic root of 12011100 is about 229.0134174680.

Adding to 12011100 its reverse (111021), we get a palindrome (12122121).

The spelling of 12011100 in words is "twelve million, eleven thousand, one hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 300 40037 80074 120111 160148 200185 240222 400370 480444 600555 800740 1000925 1201110 2001850 2402220 3002775 4003700 6005550 12011100