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12407868 = 22321131333
BaseRepresentation
bin101111010101…
…010000111100
3212100101101200
4233111100330
511134022433
61121535500
7210315354
oct57252074
925311350
1012407868
117005240
1241a4590
132755845
14190db64
151151613
hexbd543c

12407868 has 36 divisors (see below), whose sum is σ = 34216728. Its totient is φ = 3759840.

The previous prime is 12407861. The next prime is 12407869. The reversal of 12407868 is 86870421.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12407861) by changing a digit.

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, 15271 + ... + 16062.

Almost surely, 212407868 is an apocalyptic number.

12407868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12407868 is an abundant number, since it is smaller than the sum of its proper divisors (21808860).

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

12407868 is a wasteful number, since it uses less digits than its factorization.

12407868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31354 (or 31349 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 12407868 is about 3522.4803760986. The cubic root of 12407868 is about 231.5078499049.

The spelling of 12407868 in words is "twelve million, four hundred seven thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 132 198 396 31333 62666 93999 125332 187998 281997 344663 375996 563994 689326 1033989 1127988 1378652 2067978 3101967 4135956 6203934 12407868