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13498431 = 343104639
BaseRepresentation
bin110011011111…
…100000111111
3221101210100220
4303133200333
511423422211
61201152423
7222510012
oct63374077
927353326
1013498431
11768a631
12462b713
132a4804b
141b15379
1512b9806
hexcdf83f

13498431 has 8 divisors (see below), whose sum is σ = 18416640. Its totient is φ = 8789592.

The previous prime is 13498399. The next prime is 13498439. The reversal of 13498431 is 13489431.

13498431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13498431 - 25 = 13498399 is a prime.

It is a super-2 number, since 2×134984312 = 364415278923522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 13498392 and 13498401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13498439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52191 + ... + 52448.

It is an arithmetic number, because the mean of its divisors is an integer number (2302080).

Almost surely, 213498431 is an apocalyptic number.

13498431 is a deficient number, since it is larger than the sum of its proper divisors (4918209).

13498431 is a wasteful number, since it uses less digits than its factorization.

13498431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104685.

The product of its digits is 10368, while the sum is 33.

The square root of 13498431 is about 3674.0210941147. The cubic root of 13498431 is about 238.1009328739.

The spelling of 13498431 in words is "thirteen million, four hundred ninety-eight thousand, four hundred thirty-one".

Divisors: 1 3 43 129 104639 313917 4499477 13498431