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14279213 = 131098401
BaseRepresentation
bin110110011110…
…001000101101
3222212110101202
4312132020231
512123413323
61230015245
7232241234
oct66361055
928773352
1014279213
118073203
124947525
132c5c550
141c79b1b
1513c0d28
hexd9e22d

14279213 has 4 divisors (see below), whose sum is σ = 15377628. Its totient is φ = 13180800.

The previous prime is 14279191. The next prime is 14279227. The reversal of 14279213 is 31297241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31297241 = 67467123.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 12369289 = 1382^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 14279213 - 26 = 14279149 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 (14279263) 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, 549188 + ... + 549213.

It is an arithmetic number, because the mean of its divisors is an integer number (3844407).

Almost surely, 214279213 is an apocalyptic number.

14279213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

14279213 is a deficient number, since it is larger than the sum of its proper divisors (1098415).

14279213 is a wasteful number, since it uses less digits than its factorization.

14279213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098414.

The product of its digits is 3024, while the sum is 29.

The square root of 14279213 is about 3778.7845929611. The cubic root of 14279213 is about 242.6059366388.

The spelling of 14279213 in words is "fourteen million, two hundred seventy-nine thousand, two hundred thirteen".

Divisors: 1 13 1098401 14279213