8021330 has 8 divisors (see below), whose sum is σ = 14438412. Its totient is φ = 3208528.

The previous prime is 8021327. The next prime is 8021333. The reversal of 8021330 is 331208.

It is an interprime number because it is at equal distance from previous prime (8021327) and next prime (8021333).

It can be written as a sum of positive squares in 2 ways, for example, as 7187761 + 833569 = 2681^2 + 913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 8021299 and 8021308.

It is not an unprimeable number, because it can be changed into a prime (8021333) 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, 401057 + ... + 401076.

Almost surely, 2^8021330 is an apocalyptic number.

8021330 is a deficient number, since it is larger than the sum of its proper divisors (6417082).

8021330 is a wasteful number, since it uses less digits than its factorization.

8021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802140.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 8021330 is about 2832.1952616301. The cubic root of 8021330 is about 200.1775922583.

Adding to 8021330 its reverse (331208), we get a palindrome (8352538).

The spelling of 8021330 in words is "eight million, twenty-one thousand, three hundred thirty".