8021456 has 10 divisors (see below), whose sum is σ = 15541602. Its totient is φ = 4010720.

The previous prime is 8021413. The next prime is 8021471. The reversal of 8021456 is 6541208.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 839056 = 2680^2 + 916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250655 + ... + 250686.

Almost surely, 2^8021456 is an apocalyptic number.

It is an amenable number.

8021456 is a deficient number, since it is larger than the sum of its proper divisors (7520146).

8021456 is a wasteful number, since it uses less digits than its factorization.

8021456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501349 (or 501343 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 8021456 is about 2832.2175057718. The cubic root of 8021456 is about 200.1786403905.

The spelling of 8021456 in words is "eight million, twenty-one thousand, four hundred fifty-six".