8421268 has 6 divisors (see below), whose sum is σ = 14737226. Its totient is φ = 4210632.

The previous prime is 8421251. The next prime is 8421403. The reversal of 8421268 is 8621248.

It can be written as a sum of positive squares in only one way, i.e., 8282884 + 138384 = 2878^2 + 372^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1052655 + ... + 1052662.

Almost surely, 2^8421268 is an apocalyptic number.

It is an amenable number.

8421268 is a deficient number, since it is larger than the sum of its proper divisors (6315958).

8421268 is a wasteful number, since it uses less digits than its factorization.

8421268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105321 (or 2105319 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 8421268 is about 2901.9421083130. The cubic root of 8421268 is about 203.4506880258.

The spelling of 8421268 in words is "eight million, four hundred twenty-one thousand, two hundred sixty-eight".