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14370721 = 70920269
BaseRepresentation
bin110110110100…
…011110100001
31000001002220221
4312310132201
512134330341
61232003041
7233102101
oct66643641
930032827
1014370721
118125a32
124990481
132c920b1
141ca1201
1513dced1
hexdb47a1

14370721 has 4 divisors (see below), whose sum is σ = 14391700. Its totient is φ = 14349744.

The previous prime is 14370683. The next prime is 14370731. The reversal of 14370721 is 12707341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6305121 + 8065600 = 2511^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 14370721 - 213 = 14362529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14370731) 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, 9426 + ... + 10843.

It is an arithmetic number, because the mean of its divisors is an integer number (3597925).

Almost surely, 214370721 is an apocalyptic number.

It is an amenable number.

14370721 is a deficient number, since it is larger than the sum of its proper divisors (20979).

14370721 is an equidigital number, since it uses as much as digits as its factorization.

14370721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20978.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 14370721 is about 3790.8733822168. The cubic root of 14370721 is about 243.1230783194.

The spelling of 14370721 in words is "fourteen million, three hundred seventy thousand, seven hundred twenty-one".

Divisors: 1 709 20269 14370721