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13912745 = 571136137
BaseRepresentation
bin110101000100…
…101010101001
3222011211200212
4311010222221
512030201440
61214110505
7226153640
oct65045251
928154625
1013912745
117942940
1247ab435
132b617c2
141bc2357
15134c465
hexd44aa9

13912745 has 16 divisors (see below), whose sum is σ = 20815488. Its totient is φ = 8672640.

The previous prime is 13912739. The next prime is 13912757. The reversal of 13912745 is 54721931.

It is not a de Polignac number, because 13912745 - 24 = 13912729 is a prime.

It is a Duffinian number.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 17684 + ... + 18453.

It is an arithmetic number, because the mean of its divisors is an integer number (1300968).

Almost surely, 213912745 is an apocalyptic number.

It is an amenable number.

13912745 is a deficient number, since it is larger than the sum of its proper divisors (6902743).

13912745 is a wasteful number, since it uses less digits than its factorization.

13912745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36160.

The product of its digits is 7560, while the sum is 32.

The square root of 13912745 is about 3729.9792224622. The cubic root of 13912745 is about 240.5124755264.

The spelling of 13912745 in words is "thirteen million, nine hundred twelve thousand, seven hundred forty-five".

Divisors: 1 5 7 11 35 55 77 385 36137 180685 252959 397507 1264795 1987535 2782549 13912745