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14388311 = 72293639
BaseRepresentation
bin110110111000…
…110001010111
31000002000001102
4312320301113
512140411221
61232220315
7233204300
oct66706127
930060042
1014388311
118138173
12499a69b
132c9a0c2
141ca77a7
1513e330b
hexdb8c57

14388311 has 6 divisors (see below), whose sum is σ = 16737480. Its totient is φ = 12332796.

The previous prime is 14388293. The next prime is 14388331. The reversal of 14388311 is 11388341.

It is a de Polignac number, because none of the positive numbers 2k-14388311 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 (14388331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146771 + ... + 146868.

It is an arithmetic number, because the mean of its divisors is an integer number (2789580).

Almost surely, 214388311 is an apocalyptic number.

14388311 is a deficient number, since it is larger than the sum of its proper divisors (2349169).

14388311 is an equidigital number, since it uses as much as digits as its factorization.

14388311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293653 (or 293646 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 14388311 is about 3793.1927185420. The cubic root of 14388311 is about 243.2222334298. Note that the first 4 decimals are identical.

The spelling of 14388311 in words is "fourteen million, three hundred eighty-eight thousand, three hundred eleven".

Divisors: 1 7 49 293639 2055473 14388311