30021441 has 4 divisors (see below), whose sum is σ = 40028592. Its totient is φ = 20014292.

The previous prime is 30021437. The next prime is 30021451. The reversal of 30021441 is 14412003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30021441 - 2² = 30021437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30021441.

It is not an unprimeable number, because it can be changed into a prime (30021451) 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, 5003571 + ... + 5003576.

It is an arithmetic number, because the mean of its divisors is an integer number (10007148).

Almost surely, 2^30021441 is an apocalyptic number.

It is an amenable number.

30021441 is a deficient number, since it is larger than the sum of its proper divisors (10007151).

30021441 is a wasteful number, since it uses less digits than its factorization.

30021441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10007150.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 30021441 is about 5479.1825120176. The cubic root of 30021441 is about 310.7972576030.

Adding to 30021441 its reverse (14412003), we get a palindrome (44433444).

The spelling of 30021441 in words is "thirty million, twenty-one thousand, four hundred forty-one".