10021530 has 32 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 2580032.

The previous prime is 10021519. The next prime is 10021541. The reversal of 10021530 is 3512001.

10021530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10021519) and next prime (10021541).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4890 + ... + 6629.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^10021530 is an apocalyptic number.

10021530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10021530 is an abundant number, since it is smaller than the sum of its proper divisors (14861670).

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

10021530 is a wasteful number, since it uses less digits than its factorization.

10021530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11558.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 10021530 is about 3165.6800217331. The cubic root of 10021530 is about 215.5979747688.

Adding to 10021530 its reverse (3512001), we get a palindrome (13533531).

The spelling of 10021530 in words is "ten million, twenty-one thousand, five hundred thirty".