14781138 has 32 divisors (see below), whose sum is σ = 30433536. Its totient is φ = 4784208.

The previous prime is 14781133. The next prime is 14781161. The reversal of 14781138 is 83118741.

It is a junction number, because it is equal to n+sod(n) for n = 14781099 and 14781108.

It is not an unprimeable number, because it can be changed into a prime (14781131) 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, 33145 + ... + 33587.

It is an arithmetic number, because the mean of its divisors is an integer number (951048).

Almost surely, 2^14781138 is an apocalyptic number.

14781138 is an abundant number, since it is smaller than the sum of its proper divisors (15652398).

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

14781138 is a wasteful number, since it uses less digits than its factorization.

14781138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its digits is 5376, while the sum is 33.

The square root of 14781138 is about 3844.6245590434. The cubic root of 14781138 is about 245.4158590482.

Adding to 14781138 its reverse (83118741), we get a palindrome (97899879).

The spelling of 14781138 in words is "fourteen million, seven hundred eighty-one thousand, one hundred thirty-eight".