8345428 has 48 divisors (see below), whose sum is σ = 18232704. Its totient is φ = 3254400.

The previous prime is 8345423. The next prime is 8345429. The reversal of 8345428 is 8245438.

8345428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 8345393 and 8345402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8345423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36651 + ... + 36877.

It is an arithmetic number, because the mean of its divisors is an integer number (379848).

Almost surely, 2^8345428 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 8345428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9116352).

8345428 is an abundant number, since it is smaller than the sum of its proper divisors (9887276).

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

8345428 is a wasteful number, since it uses less digits than its factorization.

8345428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 350 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 8345428 is about 2888.8454441178. The cubic root of 8345428 is about 202.8381020471.

The spelling of 8345428 in words is "eight million, three hundred forty-five thousand, four hundred twenty-eight".