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12279953 = 72389857
BaseRepresentation
bin101110110110…
…000010010001
3212002212221002
4232312002101
511120424303
61115111345
7206243420
oct56660221
925085832
1012279953
116a28124
124142555
13270c55a
1418b92b7
151128788
hexbb6091

12279953 has 16 divisors (see below), whose sum is σ = 14826240. Its totient is φ = 9943296.

The previous prime is 12279919. The next prime is 12279959. The reversal of 12279953 is 35997221.

It is a cyclic number.

It is not a de Polignac number, because 12279953 - 26 = 12279889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12279959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13901 + ... + 14757.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 212279953 is an apocalyptic number.

It is an amenable number.

12279953 is a deficient number, since it is larger than the sum of its proper divisors (2546287).

12279953 is an equidigital number, since it uses as much as digits as its factorization.

12279953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976.

The product of its digits is 34020, while the sum is 38.

The square root of 12279953 is about 3504.2763875014. The cubic root of 12279953 is about 230.7095479305.

The spelling of 12279953 in words is "twelve million, two hundred seventy-nine thousand, nine hundred fifty-three".

Divisors: 1 7 23 89 161 623 857 2047 5999 14329 19711 76273 137977 533911 1754279 12279953