30028517 has 4 divisors (see below), whose sum is σ = 30320160. Its totient is φ = 29736876.

The previous prime is 30028499. The next prime is 30028573. The reversal of 30028517 is 71582003.

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 30028517 - 2¹⁰ = 30027493 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 (30028217) 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, 145667 + ... + 145872.

It is an arithmetic number, because the mean of its divisors is an integer number (7580040).

Almost surely, 2^30028517 is an apocalyptic number.

It is an amenable number.

30028517 is a deficient number, since it is larger than the sum of its proper divisors (291643).

30028517 is a wasteful number, since it uses less digits than its factorization.

30028517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291642.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 30028517 is about 5479.8281907374. The cubic root of 30028517 is about 310.8216738042.

The spelling of 30028517 in words is "thirty million, twenty-eight thousand, five hundred seventeen".