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13293423 = 3311213313
BaseRepresentation
bin110010101101…
…011101101111
3221000101011000
4302231131233
511400342143
61152531343
7220664223
oct62553557
927011130
1013293423
11755a600
124550b53
1329a5940
141aa0783
151278bd3
hexcad76f

13293423 has 48 divisors (see below), whose sum is σ = 23386720. Its totient is φ = 7413120.

The previous prime is 13293421. The next prime is 13293431. The reversal of 13293423 is 32439231.

It is a happy number.

It is not a de Polignac number, because 13293423 - 21 = 13293421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13293421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42315 + ... + 42627.

Almost surely, 213293423 is an apocalyptic number.

13293423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13293423 is a deficient number, since it is larger than the sum of its proper divisors (10093297).

13293423 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (13293422) it forms an eRAP, since the sums of their prime factors are consecutive (356 and 357).

13293423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 340 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 13293423 is about 3646.0146735854. The cubic root of 13293423 is about 236.8893891793.

The spelling of 13293423 in words is "thirteen million, two hundred ninety-three thousand, four hundred twenty-three".

Divisors: 1 3 9 11 13 27 33 39 99 117 121 143 297 313 351 363 429 939 1089 1287 1573 2817 3267 3443 3861 4069 4719 8451 10329 12207 14157 30987 36621 37873 42471 44759 92961 109863 113619 134277 340857 402831 492349 1022571 1208493 1477047 4431141 13293423