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14021005 = 517164953
BaseRepresentation
bin110101011111…
…000110001101
3222101100012111
4311133012031
512042133010
61220304021
7230114365
oct65370615
928340174
1014021005
117a07209
124842011
132b9bb6b
141c0d9a5
15136e58a
hexd5f18d

14021005 has 8 divisors (see below), whose sum is σ = 17815032. Its totient is φ = 10556928.

The previous prime is 14021003. The next prime is 14021011. The reversal of 14021005 is 50012041.

It can be written as a sum of positive squares in 4 ways, for example, as 2643876 + 11377129 = 1626^2 + 3373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14021005 - 21 = 14021003 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 (14021003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82392 + ... + 82561.

It is an arithmetic number, because the mean of its divisors is an integer number (2226879).

Almost surely, 214021005 is an apocalyptic number.

It is an amenable number.

14021005 is a deficient number, since it is larger than the sum of its proper divisors (3794027).

14021005 is a wasteful number, since it uses less digits than its factorization.

14021005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164975.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 14021005 is about 3744.4632459139. The cubic root of 14021005 is about 241.1347019908.

Adding to 14021005 its reverse (50012041), we get a palindrome (64033046).

The spelling of 14021005 in words is "fourteen million, twenty-one thousand, five".

Divisors: 1 5 17 85 164953 824765 2804201 14021005