8420384 has 24 divisors (see below), whose sum is σ = 18946368. Its totient is φ = 3608640.

The previous prime is 8420351. The next prime is 8420393. The reversal of 8420384 is 4830248.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18572 + ... + 19019.

It is an arithmetic number, because the mean of its divisors is an integer number (789432).

Almost surely, 2^8420384 is an apocalyptic number.

It is an amenable number.

8420384 is an abundant number, since it is smaller than the sum of its proper divisors (10525984).

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

8420384 is a wasteful number, since it uses less digits than its factorization.

8420384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37608 (or 37600 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 8420384 is about 2901.7897925246. The cubic root of 8420384 is about 203.4435688801.

The spelling of 8420384 in words is "eight million, four hundred twenty thousand, three hundred eighty-four".