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13808942 = 272394127
BaseRepresentation
bin110100101011…
…010100101110
3221222120022022
4310223110232
512013341232
61211550142
7225242210
oct64532456
927876268
1013808942
117881954
12475b352
132b26494
141b965b0
15132b812
hexd2b52e

13808942 has 16 divisors (see below), whose sum is σ = 23777280. Its totient is φ = 5891928.

The previous prime is 13808941. The next prime is 13808969. The reversal of 13808942 is 24980831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13808941) 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 7 ways as a sum of consecutive naturals, for example, 1283 + ... + 5409.

It is an arithmetic number, because the mean of its divisors is an integer number (1486080).

Almost surely, 213808942 is an apocalyptic number.

13808942 is a deficient number, since it is larger than the sum of its proper divisors (9968338).

13808942 is a wasteful number, since it uses less digits than its factorization.

13808942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 13808942 is about 3716.0384820397. The cubic root of 13808942 is about 239.9128271372.

The spelling of 13808942 in words is "thirteen million, eight hundred eight thousand, nine hundred forty-two".

Divisors: 1 2 7 14 239 478 1673 3346 4127 8254 28889 57778 986353 1972706 6904471 13808942