30021010 has 8 divisors (see below), whose sum is σ = 54037836. Its totient is φ = 12008400.

The previous prime is 30020999. The next prime is 30021011. The reversal of 30021010 is 1012003.

It can be written as a sum of positive squares in 2 ways, for example, as 28058209 + 1962801 = 5297^2 + 1401^2 .

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

It is a super-2 number, since 2×30021010² = 1802522082840200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30020984 and 30021002.

It is not an unprimeable number, because it can be changed into a prime (30021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501041 + ... + 1501060.

Almost surely, 2^30021010 is an apocalyptic number.

30021010 is a deficient number, since it is larger than the sum of its proper divisors (24016826).

30021010 is a wasteful number, since it uses less digits than its factorization.

30021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002108.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 30021010 is about 5479.1431811917. The cubic root of 30021010 is about 310.7957702853.

Adding to 30021010 its reverse (1012003), we get a palindrome (31033013).

The spelling of 30021010 in words is "thirty million, twenty-one thousand, ten".