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13763945 = 5131071979
BaseRepresentation
bin110100100000…
…010101101001
3221220021120202
4310200111221
512010421240
61211001545
7224664056
oct64402551
927807522
1013763945
117851068
1247392b5
132b0bb60
141b8402d
15131d315
hexd20569

13763945 has 16 divisors (see below), whose sum is σ = 17962560. Its totient is φ = 10064064.

The previous prime is 13763921. The next prime is 13763947. The reversal of 13763945 is 54936731.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13763945 - 26 = 13763881 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13763899 and 13763908.

It is not an unprimeable number, because it can be changed into a prime (13763947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5966 + ... + 7944.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 213763945 is an apocalyptic number.

It is an amenable number.

13763945 is a deficient number, since it is larger than the sum of its proper divisors (4198615).

13763945 is a wasteful number, since it uses less digits than its factorization.

13763945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104.

The product of its digits is 68040, while the sum is 38.

The square root of 13763945 is about 3709.9791104533. The cubic root of 13763945 is about 239.6519550042.

The spelling of 13763945 in words is "thirteen million, seven hundred sixty-three thousand, nine hundred forty-five".

Divisors: 1 5 13 65 107 535 1391 1979 6955 9895 25727 128635 211753 1058765 2752789 13763945