30028615 has 16 divisors (see below), whose sum is σ = 37472256. Its totient is φ = 23076000.

The previous prime is 30028589. The next prime is 30028627. The reversal of 30028615 is 51682003.

It is a happy number.

It is not a de Polignac number, because 30028615 - 2¹⁹ = 29504327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30028615.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22764 + ... + 24046.

It is an arithmetic number, because the mean of its divisors is an integer number (2342016).

Almost surely, 2^30028615 is an apocalyptic number.

30028615 is a deficient number, since it is larger than the sum of its proper divisors (7443641).

30028615 is a wasteful number, since it uses less digits than its factorization.

30028615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 30028615 is about 5479.8371326163. The cubic root of 30028615 is about 310.8220119327.

The spelling of 30028615 in words is "thirty million, twenty-eight thousand, six hundred fifteen".