Search a number
-
+
12438371 = 111497589
BaseRepresentation
bin101111011100…
…101101100011
3212101221020102
4233130231203
511141011441
61122333015
7210503321
oct57345543
925357212
1012438371
117026150
1241ba16b
1327666aa
14191ad11
15115a69b
hexbdcb63

12438371 has 8 divisors (see below), whose sum is σ = 13662000. Its totient is φ = 11230240.

The previous prime is 12438311. The next prime is 12438403. The reversal of 12438371 is 17383421.

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 12438371 - 214 = 12421987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12438301) 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, 2156 + ... + 5433.

It is an arithmetic number, because the mean of its divisors is an integer number (1707750).

Almost surely, 212438371 is an apocalyptic number.

12438371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12438371 is a deficient number, since it is larger than the sum of its proper divisors (1223629).

12438371 is a wasteful number, since it uses less digits than its factorization.

12438371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749.

The product of its digits is 4032, while the sum is 29.

The square root of 12438371 is about 3526.8074798605. The cubic root of 12438371 is about 231.6974044982.

The spelling of 12438371 in words is "twelve million, four hundred thirty-eight thousand, three hundred seventy-one".

Divisors: 1 11 149 1639 7589 83479 1130761 12438371