8021264 has 20 divisors (see below), whose sum is σ = 15589404. Its totient is φ = 3998208.

The previous prime is 8021257. The next prime is 8021269. The reversal of 8021264 is 4621208.

It can be written as a sum of positive squares in 2 ways, for example, as 4752400 + 3268864 = 2180^2 + 1808^2 .

It is not an unprimeable number, because it can be changed into a prime (8021269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6764 + ... + 7860.

Almost surely, 2^8021264 is an apocalyptic number.

It is an amenable number.

8021264 is a deficient number, since it is larger than the sum of its proper divisors (7568140).

8021264 is a wasteful number, since it uses less digits than its factorization.

8021264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8021264 is about 2832.1836098671. The cubic root of 8021264 is about 200.1770432322.

The spelling of 8021264 in words is "eight million, twenty-one thousand, two hundred sixty-four".