30021130 has 8 divisors (see below), whose sum is σ = 54038052. Its totient is φ = 12008448.

The previous prime is 30021091. The next prime is 30021137. The reversal of 30021130 is 3112003.

It can be written as a sum of positive squares in 2 ways, for example, as 28206721 + 1814409 = 5311^2 + 1347^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 3002113 = 30021130 / (3 + 0 + 0 + 2 + 1 + 1 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (30021137) 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, 1501047 + ... + 1501066.

Almost surely, 2^30021130 is an apocalyptic number.

30021130 is a deficient number, since it is larger than the sum of its proper divisors (24016922).

30021130 is a wasteful number, since it uses less digits than its factorization.

30021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002120.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30021130 is about 5479.1541317981. The cubic root of 30021130 is about 310.7961843891.

Adding to 30021130 its reverse (3112003), we get a palindrome (33133133).

The spelling of 30021130 in words is "thirty million, twenty-one thousand, one hundred thirty".