12161328 has 20 divisors (see below), whose sum is σ = 31416888. Its totient is φ = 4053760.

The previous prime is 12161321. The next prime is 12161329. The reversal of 12161328 is 82316121.

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 = 12161298 and 12161307.

It is not an unprimeable number, because it can be changed into a prime (12161321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126633 + ... + 126728.

Almost surely, 2^12161328 is an apocalyptic number.

It is an amenable number.

12161328 is an abundant number, since it is smaller than the sum of its proper divisors (19255560).

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

12161328 is a wasteful number, since it uses less digits than its factorization.

12161328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253372 (or 253366 counting only the distinct ones).

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

The square root of 12161328 is about 3487.3095646931. The cubic root of 12161328 is about 229.9642540541.

Adding to 12161328 its reverse (82316121), we get a palindrome (94477449).

The spelling of 12161328 in words is "twelve million, one hundred sixty-one thousand, three hundred twenty-eight".