8388420 has 48 divisors (see below), whose sum is σ = 23623488. Its totient is φ = 2224000.

The previous prime is 8388409. The next prime is 8388421. The reversal of 8388420 is 248838.

It is not an unprimeable number, because it can be changed into a prime (8388421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14782 + ... + 15338.

It is an arithmetic number, because the mean of its divisors is an integer number (492156).

Almost surely, 2^8388420 is an apocalyptic number.

It is an amenable number.

8388420 is an abundant number, since it is smaller than the sum of its proper divisors (15235068).

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

8388420 is a wasteful number, since it uses less digits than its factorization.

8388420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 8388420 is about 2896.2769204619. The cubic root of 8388420 is about 203.1858167400.

The spelling of 8388420 in words is "eight million, three hundred eighty-eight thousand, four hundred twenty".