8530020 has 36 divisors (see below), whose sum is σ = 25874940. Its totient is φ = 2274624.

The previous prime is 8530007. The next prime is 8530037. The reversal of 8530020 is 200358.

It can be written as a sum of positive squares in 2 ways, for example, as 1272384 + 7257636 = 1128^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×8530020² = 145522482400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 8529975 and 8530002.

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 11 ways as a sum of consecutive naturals, for example, 23515 + ... + 23874.

Almost surely, 2^8530020 is an apocalyptic number.

It is an amenable number.

8530020 is an abundant number, since it is smaller than the sum of its proper divisors (17344920).

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

8530020 is a wasteful number, since it uses less digits than its factorization.

8530020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47404 (or 47399 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 8530020 is about 2920.6197972348. The cubic root of 8530020 is about 204.3227302291.

Adding to 8530020 its reverse (200358), we get a palindrome (8730378).

The spelling of 8530020 in words is "eight million, five hundred thirty thousand, twenty".