12488138 has 16 divisors (see below), whose sum is σ = 20267016. Its totient is φ = 5736960.

The previous prime is 12488131. The next prime is 12488159. The reversal of 12488138 is 83188421.

It can be written as a sum of positive squares in 4 ways, for example, as 11135569 + 1352569 = 3337^2 + 1163^2 .

It is a Smith number, since the sum of its digits (35) 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 = 12488098 and 12488107.

It is not an unprimeable number, because it can be changed into a prime (12488131) 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, 5270 + ... + 7262.

Almost surely, 2^12488138 is an apocalyptic number.

12488138 is a deficient number, since it is larger than the sum of its proper divisors (7778878).

12488138 is a wasteful number, since it uses less digits than its factorization.

12488138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249.

The product of its digits is 12288, while the sum is 35.

The square root of 12488138 is about 3533.8559676365. The cubic root of 12488138 is about 232.0060070779.

The spelling of 12488138 in words is "twelve million, four hundred eighty-eight thousand, one hundred thirty-eight".