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12238663 = 32033821
BaseRepresentation
bin101110101011…
…111101000111
3212000210021211
4232223331013
511113114123
61114152251
7206012143
oct56537507
925023254
1012238663
1169aa0a8
124122687
1326c6818
1418a8223
15111b40d
hexbabf47

12238663 has 4 divisors (see below), whose sum is σ = 12245688. Its totient is φ = 12231640.

The previous prime is 12238661. The next prime is 12238729. The reversal of 12238663 is 36683221.

12238663 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 36683221 = 73949639.

It is a cyclic number.

It is not a de Polignac number, because 12238663 - 21 = 12238661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238661) 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, 1293 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (3061422).

Almost surely, 212238663 is an apocalyptic number.

12238663 is a deficient number, since it is larger than the sum of its proper divisors (7025).

12238663 is an equidigital number, since it uses as much as digits as its factorization.

12238663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7024.

The product of its digits is 10368, while the sum is 31.

The square root of 12238663 is about 3498.3800536820. The cubic root of 12238663 is about 230.4506790263.

The spelling of 12238663 in words is "twelve million, two hundred thirty-eight thousand, six hundred sixty-three".

Divisors: 1 3203 3821 12238663