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10905245 = 5131771139
BaseRepresentation
bin101001100110…
…011010011101
3202112001011222
4221212122131
510242431440
61025423125
7161456501
oct51463235
922461158
1010905245
1161792aa
12379aaa5
13234a910
14163c301
15e562b5
hexa6669d

10905245 has 32 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 7418880.

The previous prime is 10905241. The next prime is 10905253. The reversal of 10905245 is 54250901.

It is not a de Polignac number, because 10905245 - 22 = 10905241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10905241) 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 31 ways as a sum of consecutive naturals, for example, 78386 + ... + 78524.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

Almost surely, 210905245 is an apocalyptic number.

It is an amenable number.

10905245 is a deficient number, since it is larger than the sum of its proper divisors (4335715).

10905245 is a wasteful number, since it uses less digits than its factorization.

10905245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 10905245 is about 3302.3090406562. The cubic root of 10905245 is about 221.7575810639.

The spelling of 10905245 in words is "ten million, nine hundred five thousand, two hundred forty-five".

Divisors: 1 5 13 17 65 71 85 139 221 355 695 923 1105 1207 1807 2363 4615 6035 9035 9869 11815 15691 30719 49345 78455 128297 153595 167773 641485 838865 2181049 10905245