8206428 has 48 divisors (see below), whose sum is σ = 19877760. Its totient is φ = 2633664.

The previous prime is 8206411. The next prime is 8206439. The reversal of 8206428 is 8246028.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8206395 and 8206404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47350 + ... + 47522.

It is an arithmetic number, because the mean of its divisors is an integer number (414120).

Almost surely, 2^8206428 is an apocalyptic number.

It is an amenable number.

8206428 is an abundant number, since it is smaller than the sum of its proper divisors (11671332).

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

8206428 is a wasteful number, since it uses less digits than its factorization.

8206428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 8206428 is about 2864.6863702681. The cubic root of 8206428 is about 201.7056458437.

The spelling of 8206428 in words is "eight million, two hundred six thousand, four hundred twenty-eight".