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13951956 = 2231162663
BaseRepresentation
bin110101001110…
…001111010100
3222020211111010
4311032033110
512032430311
61215012220
7226406154
oct65161724
928224433
1013951956
11796a347
12480a070
132b765c5
141bd2764
151358da6
hexd4e3d4

13951956 has 12 divisors (see below), whose sum is σ = 32554592. Its totient is φ = 4650648.

The previous prime is 13951937. The next prime is 13951957. The reversal of 13951956 is 65915931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13951957) 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 3 ways as a sum of consecutive naturals, for example, 581320 + ... + 581343.

Almost surely, 213951956 is an apocalyptic number.

It is an amenable number.

13951956 is an abundant number, since it is smaller than the sum of its proper divisors (18602636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13951956 is a wasteful number, since it uses less digits than its factorization.

13951956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162670 (or 1162668 counting only the distinct ones).

The product of its digits is 36450, while the sum is 39.

The square root of 13951956 is about 3735.2317197197. The cubic root of 13951956 is about 240.7382131221.

The spelling of 13951956 in words is "thirteen million, nine hundred fifty-one thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 12 1162663 2325326 3487989 4650652 6975978 13951956