30028893 has 8 divisors (see below), whose sum is σ = 40331328. Its totient is φ = 19872864.

The previous prime is 30028871. The next prime is 30028903. The reversal of 30028893 is 39882003.

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

It is not a de Polignac number, because 30028893 - 2⁸ = 30028637 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30028813) 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, 36121 + ... + 36942.

It is an arithmetic number, because the mean of its divisors is an integer number (5041416).

Almost surely, 2^30028893 is an apocalyptic number.

It is an amenable number.

30028893 is a deficient number, since it is larger than the sum of its proper divisors (10302435).

30028893 is a wasteful number, since it uses less digits than its factorization.

30028893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73203.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 30028893 is about 5479.8624982749. The cubic root of 30028893 is about 310.8229711095.

The spelling of 30028893 in words is "thirty million, twenty-eight thousand, eight hundred ninety-three".