12613128 has 32 divisors (see below), whose sum is σ = 34400160. Its totient is φ = 3822080.

The previous prime is 12613127. The next prime is 12613171. The reversal of 12613128 is 82131621.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12613098 and 12613107.

It is not an unprimeable number, because it can be changed into a prime (12613123) 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, 23625 + ... + 24152.

It is an arithmetic number, because the mean of its divisors is an integer number (1075005).

Almost surely, 2^12613128 is an apocalyptic number.

It is an amenable number.

12613128 is an abundant number, since it is smaller than the sum of its proper divisors (21787032).

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

12613128 is a wasteful number, since it uses less digits than its factorization.

12613128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47797 (or 47793 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 12613128 is about 3551.4965859480. The cubic root of 12613128 is about 232.7774650191. Note that the first 3 decimals are identical.

Adding to 12613128 its reverse (82131621), we get a palindrome (94744749).

The spelling of 12613128 in words is "twelve million, six hundred thirteen thousand, one hundred twenty-eight".