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12247601 = 19976133
BaseRepresentation
bin101110101110…
…001000110001
3212001020112212
4232232020301
511113410401
61114301505
7206050202
oct56561061
925036485
1012247601
116a05893
124127895
1326ca902
1418ab5a9
15111ddbb
hexbae231

12247601 has 4 divisors (see below), whose sum is σ = 12255732. Its totient is φ = 12239472.

The previous prime is 12247579. The next prime is 12247603. The reversal of 12247601 is 10674221.

12247601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5997601 + 6250000 = 2449^2 + 2500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12247601 is a prime.

It is a Duffinian number.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12247603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (3063933).

Almost surely, 212247601 is an apocalyptic number.

It is an amenable number.

12247601 is a deficient number, since it is larger than the sum of its proper divisors (8131).

12247601 is an equidigital number, since it uses as much as digits as its factorization.

12247601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8130.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 12247601 is about 3499.6572689336. The cubic root of 12247601 is about 230.5067654073.

The spelling of 12247601 in words is "twelve million, two hundred forty-seven thousand, six hundred one".

Divisors: 1 1997 6133 12247601