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18276007 = 23797997
BaseRepresentation
bin100010110110…
…1111010100111
31021101111222011
41011231322213
514134313012
61451415051
7311225551
oct105557247
937344864
1018276007
11a353042
126154487
133a2b809
1425da4d1
1519101a7
hex116dea7

18276007 has 8 divisors (see below), whose sum is σ = 19113696. Its totient is φ = 17441952.

The previous prime is 18275987. The next prime is 18276023. The reversal of 18276007 is 70067281.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-18276007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18276007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18276067) 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, 17833 + ... + 18829.

It is an arithmetic number, because the mean of its divisors is an integer number (2389212).

Almost surely, 218276007 is an apocalyptic number.

18276007 is a deficient number, since it is larger than the sum of its proper divisors (837689).

18276007 is an equidigital number, since it uses as much as digits as its factorization.

18276007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 18276007 is about 4275.0446781291. The cubic root of 18276007 is about 263.4068745447.

The spelling of 18276007 in words is "eighteen million, two hundred seventy-six thousand, seven".

Divisors: 1 23 797 997 18331 22931 794609 18276007