13286403 has 16 divisors (see below), whose sum is σ = 21198240. Its totient is φ = 8176032.

The previous prime is 13286393. The next prime is 13286407. The reversal of 13286403 is 30468231.

It is a happy number.

13286403 is a `hidden beast` number, since 13 + 2 + 8 + 640 + 3 = 666.

It is not a de Polignac number, because 13286403 - 2¹⁰ = 13285379 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (13286407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18576 + ... + 19277.

It is an arithmetic number, because the mean of its divisors is an integer number (1324890).

Almost surely, 2^13286403 is an apocalyptic number.

13286403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13286403 is a deficient number, since it is larger than the sum of its proper divisors (7911837).

13286403 is a wasteful number, since it uses less digits than its factorization.

13286403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37875 (or 37869 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13286403 is about 3645.0518514830. The cubic root of 13286403 is about 236.8476829330.

It can be divided in two parts, 13286 and 403, that added together give a square (13689 = 117²).

The spelling of 13286403 in words is "thirteen million, two hundred eighty-six thousand, four hundred three".