30020271 has 4 divisors (see below), whose sum is σ = 40027032. Its totient is φ = 20013512.

The previous prime is 30020261. The next prime is 30020273. The reversal of 30020271 is 17202003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30020271 - 2²² = 25825967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30020271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5003376 + ... + 5003381.

It is an arithmetic number, because the mean of its divisors is an integer number (10006758).

Almost surely, 2^30020271 is an apocalyptic number.

30020271 is a deficient number, since it is larger than the sum of its proper divisors (10006761).

30020271 is a wasteful number, since it uses less digits than its factorization.

30020271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006760.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 30020271 is about 5479.0757432253. The cubic root of 30020271 is about 310.7932200718.

Adding to 30020271 its reverse (17202003), we get a palindrome (47222274).

The spelling of 30020271 in words is "thirty million, twenty thousand, two hundred seventy-one".