30285513 has 6 divisors (see below), whose sum is σ = 43745754. Its totient is φ = 20190336.

The previous prime is 30285509. The next prime is 30285529. The reversal of 30285513 is 31558203.

It can be written as a sum of positive squares in only one way, i.e., 19474569 + 10810944 = 4413^2 + 3288^2 .

It is not a de Polignac number, because 30285513 - 2² = 30285509 is a prime.

It is a super-3 number, since 3×30285513³ (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 (30285413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1682520 + ... + 1682537.

It is an arithmetic number, because the mean of its divisors is an integer number (7290959).

Almost surely, 2^30285513 is an apocalyptic number.

It is an amenable number.

30285513 is a deficient number, since it is larger than the sum of its proper divisors (13460241).

30285513 is a wasteful number, since it uses less digits than its factorization.

30285513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365063 (or 3365060 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 30285513 is about 5503.2275075632. The cubic root of 30285513 is about 311.7058680168.

The spelling of 30285513 in words is "thirty million, two hundred eighty-five thousand, five hundred thirteen".