8228420 has 12 divisors (see below), whose sum is σ = 17279724. Its totient is φ = 3291360.

The previous prime is 8228419. The next prime is 8228447. The reversal of 8228420 is 248228.

It can be written as a sum of positive squares in 2 ways, for example, as 1592644 + 6635776 = 1262^2 + 2576^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8228420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205691 + ... + 205730.

It is an arithmetic number, because the mean of its divisors is an integer number (1439977).

Almost surely, 2^8228420 is an apocalyptic number.

It is an amenable number.

8228420 is an abundant number, since it is smaller than the sum of its proper divisors (9051304).

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

8228420 is a wasteful number, since it uses less digits than its factorization.

8228420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411430 (or 411428 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 8228420 is about 2868.5222676493. The cubic root of 8228420 is about 201.8856654546.

The spelling of 8228420 in words is "eight million, two hundred twenty-eight thousand, four hundred twenty".