8289428 has 18 divisors (see below), whose sum is σ = 16875306. Its totient is φ = 3552528.

The previous prime is 8289419. The next prime is 8289433. The reversal of 8289428 is 8249828.

It can be written as a sum of positive squares in only one way, i.e., 6210064 + 2079364 = 2492^2 + 1442^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20951 + ... + 21342.

It is an arithmetic number, because the mean of its divisors is an integer number (937517).

Almost surely, 2^8289428 is an apocalyptic number.

It is an amenable number.

8289428 is an abundant number, since it is smaller than the sum of its proper divisors (8585878).

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

8289428 is a wasteful number, since it uses less digits than its factorization.

8289428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42311 (or 42302 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 8289428 is about 2879.1366761583. The cubic root of 8289428 is about 202.3833845661.

The spelling of 8289428 in words is "eight million, two hundred eighty-nine thousand, four hundred twenty-eight".