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14205247 = 721312213
BaseRepresentation
bin110110001100…
…000100111111
3222201200221021
4312030010333
512114031442
61224245011
7231512500
oct66140477
928650837
1014205247
118022681
124910767
132c34994
141c5aba7
1513a8e67
hexd8c13f

14205247 has 12 divisors (see below), whose sum is σ = 16658136. Its totient is φ = 12077520.

The previous prime is 14205241. The next prime is 14205259. The reversal of 14205247 is 74250241.

It is not a de Polignac number, because 14205247 - 23 = 14205239 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 (14205241) 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 11 ways as a sum of consecutive naturals, for example, 5313 + ... + 7525.

It is an arithmetic number, because the mean of its divisors is an integer number (1388178).

Almost surely, 214205247 is an apocalyptic number.

14205247 is a deficient number, since it is larger than the sum of its proper divisors (2452889).

14205247 is a wasteful number, since it uses less digits than its factorization.

14205247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358 (or 2351 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 14205247 is about 3768.9848765948. The cubic root of 14205247 is about 242.1863135037.

Adding to 14205247 its reverse (74250241), we get a palindrome (88455488).

The spelling of 14205247 in words is "fourteen million, two hundred five thousand, two hundred forty-seven".

Divisors: 1 7 49 131 917 2213 6419 15491 108437 289903 2029321 14205247