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12280892 = 2213237491
BaseRepresentation
bin101110110110…
…010000111100
3212002221012212
4232312100330
511120442032
61115115552
7206246231
oct56662074
925087185
1012280892
116a288a8
124142bb8
13270cb00
1418b9788
151128bb2
hexbb643c

12280892 has 36 divisors (see below), whose sum is σ = 23949576. Its totient is φ = 5503680.

The previous prime is 12280883. The next prime is 12280901. The reversal of 12280892 is 29808221.

It is an interprime number because it is at equal distance from previous prime (12280883) and next prime (12280901).

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, 24767 + ... + 25257.

It is an arithmetic number, because the mean of its divisors is an integer number (665266).

Almost surely, 212280892 is an apocalyptic number.

It is an amenable number.

12280892 is a deficient number, since it is larger than the sum of its proper divisors (11668684).

12280892 is a wasteful number, since it uses less digits than its factorization.

12280892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 543 counting only the distinct ones).

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

The square root of 12280892 is about 3504.4103640984. The cubic root of 12280892 is about 230.7154282664.

The spelling of 12280892 in words is "twelve million, two hundred eighty thousand, eight hundred ninety-two".

Divisors: 1 2 4 13 26 37 52 74 148 169 338 481 491 676 962 982 1924 1964 6253 6383 12506 12766 18167 25012 25532 36334 72668 82979 165958 236171 331916 472342 944684 3070223 6140446 12280892