8398428 has 24 divisors (see below), whose sum is σ = 19660032. Its totient is φ = 2790384.

The previous prime is 8398421. The next prime is 8398447. The reversal of 8398428 is 8248938.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8398428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3451 + ... + 5357.

It is an arithmetic number, because the mean of its divisors is an integer number (819168).

Almost surely, 2^8398428 is an apocalyptic number.

It is an amenable number.

8398428 is an abundant number, since it is smaller than the sum of its proper divisors (11261604).

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

8398428 is a wasteful number, since it uses less digits than its factorization.

8398428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2279 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 8398428 is about 2898.0041407838. The cubic root of 8398428 is about 203.2665898173.

The spelling of 8398428 in words is "eight million, three hundred ninety-eight thousand, four hundred twenty-eight".