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22680265 = 537312161
BaseRepresentation
bin101011010000…
…1001011001001
31120200021110211
41112201023021
521301232030
62130041121
7363531136
oct126411311
946607424
1022680265
1111891023
1277191a1
13491139a
14302558d
151ed012a
hex15a12c9

22680265 has 8 divisors (see below), whose sum is σ = 27291528. Its totient is φ = 18094080.

The previous prime is 22680253. The next prime is 22680283. The reversal of 22680265 is 56208622.

It can be written as a sum of positive squares in 4 ways, for example, as 927369 + 21752896 = 963^2 + 4664^2 .

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

It is not a de Polignac number, because 22680265 - 211 = 22678217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4216 + ... + 7945.

It is an arithmetic number, because the mean of its divisors is an integer number (3411441).

Almost surely, 222680265 is an apocalyptic number.

It is an amenable number.

22680265 is a deficient number, since it is larger than the sum of its proper divisors (4611263).

22680265 is a wasteful number, since it uses less digits than its factorization.

22680265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12539.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 22680265 is about 4762.3801822198. The cubic root of 22680265 is about 283.0627412740.

Adding to 22680265 its reverse (56208622), we get a palindrome (78888887).

The spelling of 22680265 in words is "twenty-two million, six hundred eighty thousand, two hundred sixty-five".

Divisors: 1 5 373 1865 12161 60805 4536053 22680265