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14388680 = 235615897
BaseRepresentation
bin110110111000…
…110111001000
31000002000120002
4312320313020
512140414210
61232222132
7233205335
oct66706710
930060502
1014388680
118138479
12499a948
132c9a317
141ca798c
1513e34a5
hexdb8dc8

14388680 has 32 divisors (see below), whose sum is σ = 32910840. Its totient is φ = 5660160.

The previous prime is 14388679. The next prime is 14388691. The reversal of 14388680 is 8688341.

It can be written as a sum of positive squares in 4 ways, for example, as 10876804 + 3511876 = 3298^2 + 1874^2 .

It is a super-2 number, since 2×143886802 = 414068224284800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509 + ... + 5388.

Almost surely, 214388680 is an apocalyptic number.

14388680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14388680 is an abundant number, since it is smaller than the sum of its proper divisors (18522160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14388680 is a wasteful number, since it uses less digits than its factorization.

14388680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5969 (or 5965 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 14388680 is about 3793.2413579945. The cubic root of 14388680 is about 243.2243126231.

The spelling of 14388680 in words is "fourteen million, three hundred eighty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 61 122 244 305 488 610 1220 2440 5897 11794 23588 29485 47176 58970 117940 235880 359717 719434 1438868 1798585 2877736 3597170 7194340 14388680