8450428 has 48 divisors (see below), whose sum is σ = 18373824. Its totient is φ = 3317760.

The previous prime is 8450423. The next prime is 8450441. The reversal of 8450428 is 8240548.

It is a self number, because there is not a number n which added to its sum of digits gives 8450428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8450423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19300 + ... + 19732.

It is an arithmetic number, because the mean of its divisors is an integer number (382788).

Almost surely, 2^8450428 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 8450428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9186912).

8450428 is an abundant number, since it is smaller than the sum of its proper divisors (9923396).

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

8450428 is a wasteful number, since it uses less digits than its factorization.

8450428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 8450428 is about 2906.9619880556. The cubic root of 8450428 is about 203.6852444548.

The spelling of 8450428 in words is "eight million, four hundred fifty thousand, four hundred twenty-eight".