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14230639 = 19748981
BaseRepresentation
bin110110010010…
…010001101111
3222202222202201
4312102101233
512120340024
61225002331
7231646513
oct66222157
928688681
1014230639
11803a765
1249233a7
132c433c7
141c66143
1513b1744
hexd9246f

14230639 has 4 divisors (see below), whose sum is σ = 14979640. Its totient is φ = 13481640.

The previous prime is 14230633. The next prime is 14230651. The reversal of 14230639 is 93603241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93603241 = 175506073.

It is not a de Polignac number, because 14230639 - 23 = 14230631 is a prime.

It is a super-2 number, since 2×142306392 = 405022172696642, 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 (14230631) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 374472 + ... + 374509.

It is an arithmetic number, because the mean of its divisors is an integer number (3744910).

Almost surely, 214230639 is an apocalyptic number.

14230639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

14230639 is a deficient number, since it is larger than the sum of its proper divisors (749001).

14230639 is an equidigital number, since it uses as much as digits as its factorization.

14230639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749000.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 14230639 is about 3772.3519188962. The cubic root of 14230639 is about 242.3305309739.

The spelling of 14230639 in words is "fourteen million, two hundred thirty thousand, six hundred thirty-nine".

Divisors: 1 19 748981 14230639