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14389487 = 72319473
BaseRepresentation
bin110110111001…
…000011101111
31000002001122222
4312321003233
512140430422
61232225555
7233210600
oct66710357
930061588
1014389487
118139042
12499b2bb
132c9a7b8
141ca7da7
1513e3842
hexdb90ef

14389487 has 12 divisors (see below), whose sum is σ = 17280576. Its totient is φ = 11934720.

The previous prime is 14389469. The next prime is 14389489. The reversal of 14389487 is 78498341.

It is not a de Polignac number, because 14389487 - 28 = 14389231 is a prime.

It is a super-2 number, since 2×143894872 = 414114672246338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14389489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3218 + ... + 6255.

It is an arithmetic number, because the mean of its divisors is an integer number (1440048).

Almost surely, 214389487 is an apocalyptic number.

14389487 is a deficient number, since it is larger than the sum of its proper divisors (2891089).

14389487 is an equidigital number, since it uses as much as digits as its factorization.

14389487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518 (or 9511 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 14389487 is about 3793.3477299082. The cubic root of 14389487 is about 243.2288596779.

The spelling of 14389487 in words is "fourteen million, three hundred eighty-nine thousand, four hundred eighty-seven".

Divisors: 1 7 31 49 217 1519 9473 66311 293663 464177 2055641 14389487