30028649 has 8 divisors (see below), whose sum is σ = 34366080. Its totient is φ = 25703136.

The previous prime is 30028637. The next prime is 30028657. The reversal of 30028649 is 94682003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30028649 - 2⁴ = 30028633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30028679) 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 7 ways as a sum of consecutive naturals, for example, 3317 + ... + 8429.

It is an arithmetic number, because the mean of its divisors is an integer number (4295760).

Almost surely, 2^30028649 is an apocalyptic number.

It is an amenable number.

30028649 is a deficient number, since it is larger than the sum of its proper divisors (4337431).

30028649 is an equidigital number, since it uses as much as digits as its factorization.

30028649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30028649 is about 5479.8402348974. The cubic root of 30028649 is about 310.8221292424.

The spelling of 30028649 in words is "thirty million, twenty-eight thousand, six hundred forty-nine".