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12207387 = 317092381
BaseRepresentation
bin101110100100…
…010100011011
3211222012101110
4232210110123
511111114022
61113351403
7205522023
oct56442433
924865343
1012207387
116988655
124108563
1326b550a
14189aa83
15111200c
hexba451b

12207387 has 8 divisors (see below), whose sum is σ = 16292880. Its totient is φ = 8130080.

The previous prime is 12207341. The next prime is 12207389. The reversal of 12207387 is 78370221.

12207387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12207387 - 26 = 12207323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12207389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3937 + ... + 6317.

It is an arithmetic number, because the mean of its divisors is an integer number (2036610).

Almost surely, 212207387 is an apocalyptic number.

12207387 is a deficient number, since it is larger than the sum of its proper divisors (4085493).

12207387 is a wasteful number, since it uses less digits than its factorization.

12207387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 12207387 is about 3493.9071252682. The cubic root of 12207387 is about 230.2542053907.

The spelling of 12207387 in words is "twelve million, two hundred seven thousand, three hundred eighty-seven".

Divisors: 1 3 1709 2381 5127 7143 4069129 12207387