13234451328 has 160 divisors (see below), whose sum is σ = 45012261360. Its totient is φ = 3781251072.

The previous prime is 13234451317. The next prime is 13234451341. The reversal of 13234451328 is 82315443231.

13234451328 is a `hidden beast` number, since 1 + 323 + 4 + 4 + 5 + 1 + 328 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13234451292 and 13234451301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18601 + ... + 163752.

Almost surely, 2^13234451328 is an apocalyptic number.

13234451328 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 13234451328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22506130680).

13234451328 is an abundant number, since it is smaller than the sum of its proper divisors (31777810032).

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

13234451328 is an equidigital number, since it uses as much as digits as its factorization.

13234451328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182386 (or 182365 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 13234451328 its reverse (82315443231), we get a palindrome (95549894559).

The spelling of 13234451328 in words is "thirteen billion, two hundred thirty-four million, four hundred fifty-one thousand, three hundred twenty-eight".