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13224001 = 71889143
BaseRepresentation
bin110010011100…
…100001000001
3220212211220211
4302130201001
511341132001
61151234121
7220254640
oct62344101
926784824
1013224001
11751242a
124518941
13298016b
141a83357
151263351
hexc9c841

13224001 has 4 divisors (see below), whose sum is σ = 15113152. Its totient is φ = 11334852.

The previous prime is 13223957. The next prime is 13224037. The reversal of 13224001 is 10042231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10042231 = 56317837.

It is a cyclic number.

It is not a de Polignac number, because 13224001 - 211 = 13221953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13224901) 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, 944565 + ... + 944578.

It is an arithmetic number, because the mean of its divisors is an integer number (3778288).

Almost surely, 213224001 is an apocalyptic number.

It is an amenable number.

13224001 is a deficient number, since it is larger than the sum of its proper divisors (1889151).

13224001 is an equidigital number, since it uses as much as digits as its factorization.

13224001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889150.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13224001 is about 3636.4819537570. The cubic root of 13224001 is about 236.4763015466.

Adding to 13224001 its reverse (10042231), we get a palindrome (23266232).

The spelling of 13224001 in words is "thirteen million, two hundred twenty-four thousand, one".

Divisors: 1 7 1889143 13224001