13128324 has 48 divisors (see below), whose sum is σ = 33632256. Its totient is φ = 3952800.

The previous prime is 13128319. The next prime is 13128337. The reversal of 13128324 is 42382131.

It is a junction number, because it is equal to n+sod(n) for n = 13128294 and 13128303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35589 + ... + 35955.

It is an arithmetic number, because the mean of its divisors is an integer number (700672).

Almost surely, 2^13128324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13128324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16816128).

13128324 is an abundant number, since it is smaller than the sum of its proper divisors (20503932).

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

13128324 is a wasteful number, since it uses less digits than its factorization.

13128324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 654 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 13128324 is about 3623.3029130891. The cubic root of 13128324 is about 235.9046104967.

The spelling of 13128324 in words is "thirteen million, one hundred twenty-eight thousand, three hundred twenty-four".