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7968225 = 352106243
BaseRepresentation
bin11110011001010111100001
3112222211100110
4132121113201
54014440400
6442441533
7124504656
oct36312741
915884313
107968225
114552711
1228032a9
13185cb35
1410b5c2d
15a75e50
hex7995e1

7968225 has 12 divisors (see below), whose sum is σ = 13174256. Its totient is φ = 4249680.

The previous prime is 7968217. The next prime is 7968229. The reversal of 7968225 is 5228697.

It is a happy number.

It is not a de Polignac number, because 7968225 - 23 = 7968217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7968229) 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 11 ways as a sum of consecutive naturals, for example, 53047 + ... + 53196.

Almost surely, 27968225 is an apocalyptic number.

7968225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7968225 is a deficient number, since it is larger than the sum of its proper divisors (5206031).

7968225 is a wasteful number, since it uses less digits than its factorization.

7968225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106256 (or 106251 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 7968225 is about 2822.8044565644. The cubic root of 7968225 is about 199.7348569846.

The spelling of 7968225 in words is "seven million, nine hundred sixty-eight thousand, two hundred twenty-five".

Divisors: 1 3 5 15 25 75 106243 318729 531215 1593645 2656075 7968225