30028645 has 16 divisors (see below), whose sum is σ = 38960640. Its totient is φ = 22140864.

The previous prime is 30028637. The next prime is 30028657. The reversal of 30028645 is 54682003.

It is a cyclic number.

It is not a de Polignac number, because 30028645 - 2³ = 30028637 is a prime.

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, 757 + ... + 7786.

It is an arithmetic number, because the mean of its divisors is an integer number (2435040).

Almost surely, 2^30028645 is an apocalyptic number.

It is an amenable number.

30028645 is a deficient number, since it is larger than the sum of its proper divisors (8931995).

30028645 is a wasteful number, since it uses less digits than its factorization.

30028645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30028645 is about 5479.8398699232. The cubic root of 30028645 is about 310.8221154413.

The spelling of 30028645 in words is "thirty million, twenty-eight thousand, six hundred forty-five".