30285813 has 16 divisors (see below), whose sum is σ = 41425920. Its totient is φ = 19672176.

The previous prime is 30285799. The next prime is 30285833. The reversal of 30285813 is 31858203.

It is a happy number.

It is not a de Polignac number, because 30285813 - 2⁴ = 30285797 is a prime.

It is a super-3 number, since 3×30285813³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30285833) 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 15 ways as a sum of consecutive naturals, for example, 48618 + ... + 49236.

It is an arithmetic number, because the mean of its divisors is an integer number (2589120).

Almost surely, 2^30285813 is an apocalyptic number.

It is an amenable number.

30285813 is a deficient number, since it is larger than the sum of its proper divisors (11140107).

30285813 is a wasteful number, since it uses less digits than its factorization.

30285813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 30285813 is about 5503.2547642282. The cubic root of 30285813 is about 311.7068972378.

The spelling of 30285813 in words is "thirty million, two hundred eighty-five thousand, eight hundred thirteen".