8328397428 has 192 divisors, whose sum is σ = 24603425280. Its totient is φ = 2416905216.

The previous prime is 8328397417. The next prime is 8328397459. The reversal of 8328397428 is 8247938238.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2355550 + ... + 2359082.

It is an arithmetic number, because the mean of its divisors is an integer number (128142840).

Almost surely, 2^8328397428 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 8328397428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12301712640).

8328397428 is an abundant number, since it is smaller than the sum of its proper divisors (16275027852).

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

8328397428 is a wasteful number, since it uses less digits than its factorization.

8328397428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655 (or 3647 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 8328397428 is about 91260.0538461380. The cubic root of 8328397428 is about 2027.0003038246. Note that the first 3 decimals are identical.

The spelling of 8328397428 in words is "eight billion, three hundred twenty-eight million, three hundred ninety-seven thousand, four hundred twenty-eight".