12173328 has 120 divisors (see below), whose sum is σ = 36830976. Its totient is φ = 3888000.

The previous prime is 12173327. The next prime is 12173353. The reversal of 12173328 is 82337121.

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 (12173321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120478 + ... + 120578.

Almost surely, 2^12173328 is an apocalyptic number.

12173328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12173328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18415488).

12173328 is an abundant number, since it is smaller than the sum of its proper divisors (24657648).

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

12173328 is a wasteful number, since it uses less digits than its factorization.

12173328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 137 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 12173328 is about 3489.0296645343. The cubic root of 12173328 is about 230.0398670653.

The spelling of 12173328 in words is "twelve million, one hundred seventy-three thousand, three hundred twenty-eight".