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12066972 = 2231005581
BaseRepresentation
bin101110000010…
…000010011100
3211201001202220
4232002002130
511042120342
61110345340
7204365451
oct56020234
924631686
1012066972
1168a2105
12405b250
132666628
141861828
1510d55ec
hexb8209c

12066972 has 12 divisors (see below), whose sum is σ = 28156296. Its totient is φ = 4022320.

The previous prime is 12066953. The next prime is 12066979. The reversal of 12066972 is 27966021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×120669722 = 291223626497568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502779 + ... + 502802.

It is an arithmetic number, because the mean of its divisors is an integer number (2346358).

Almost surely, 212066972 is an apocalyptic number.

12066972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12066972 is an abundant number, since it is smaller than the sum of its proper divisors (16089324).

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

12066972 is a wasteful number, since it uses less digits than its factorization.

12066972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005588 (or 1005586 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 12066972 is about 3473.7547409108. The cubic root of 12066972 is about 229.3679686362.

The spelling of 12066972 in words is "twelve million, sixty-six thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 1005581 2011162 3016743 4022324 6033486 12066972