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18214301 = 72602043
BaseRepresentation
bin100010101111…
…0110110011101
31021021101022202
41011132312131
514130324201
61450221245
7310550630
oct105366635
937241282
1018214301
11a310746
126124825
133a096c1
1425c1c17
1518ebc6b
hex115ed9d

18214301 has 4 divisors (see below), whose sum is σ = 20816352. Its totient is φ = 15612252.

The previous prime is 18214297. The next prime is 18214363. The reversal of 18214301 is 10341281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18214301 - 22 = 18214297 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 (18214381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301015 + ... + 1301028.

It is an arithmetic number, because the mean of its divisors is an integer number (5204088).

Almost surely, 218214301 is an apocalyptic number.

It is an amenable number.

18214301 is a deficient number, since it is larger than the sum of its proper divisors (2602051).

18214301 is an equidigital number, since it uses as much as digits as its factorization.

18214301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602050.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 18214301 is about 4267.8215754645. The cubic root of 18214301 is about 263.1100899543.

Adding to 18214301 its reverse (10341281), we get a palindrome (28555582).

The spelling of 18214301 in words is "eighteen million, two hundred fourteen thousand, three hundred one".

Divisors: 1 7 2602043 18214301