30572013 has 4 divisors (see below), whose sum is σ = 40762688. Its totient is φ = 20381340.

The previous prime is 30571999. The next prime is 30572021. The reversal of 30572013 is 31027503.

It is a happy number.

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 not a de Polignac number, because 30572013 - 2⁴ = 30571997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30572023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5095333 + ... + 5095338.

It is an arithmetic number, because the mean of its divisors is an integer number (10190672).

Almost surely, 2^30572013 is an apocalyptic number.

It is an amenable number.

30572013 is a deficient number, since it is larger than the sum of its proper divisors (10190675).

30572013 is a wasteful number, since it uses less digits than its factorization.

30572013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10190674.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 30572013 is about 5529.1964153935. The cubic root of 30572013 is about 312.6856940082.

Adding to 30572013 its reverse (31027503), we get a palindrome (61599516).

The spelling of 30572013 in words is "thirty million, five hundred seventy-two thousand, thirteen".