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12112007 = 172330977
BaseRepresentation
bin101110001101…
…000010000111
3211210100112212
4232031002013
511100041012
61111334035
7204643655
oct56150207
924710485
1012112007
116922a26
12408131b
132680c8b
141873dd5
1510e3b22
hexb8d087

12112007 has 8 divisors (see below), whose sum is σ = 13382496. Its totient is φ = 10903552.

The previous prime is 12111997. The next prime is 12112013. The reversal of 12112007 is 70021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12112007 - 24 = 12111991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111982 and 12112000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112027) 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 7 ways as a sum of consecutive naturals, for example, 15098 + ... + 15879.

It is an arithmetic number, because the mean of its divisors is an integer number (1672812).

Almost surely, 212112007 is an apocalyptic number.

12112007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12112007 is a deficient number, since it is larger than the sum of its proper divisors (1270489).

12112007 is a wasteful number, since it uses less digits than its factorization.

12112007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31017.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12112007 is about 3480.2308831455. The cubic root of 12112007 is about 229.6529548707.

Adding to 12112007 its reverse (70021121), we get a palindrome (82133128).

The spelling of 12112007 in words is "twelve million, one hundred twelve thousand, seven".

Divisors: 1 17 23 391 30977 526609 712471 12112007