30028355 has 8 divisors (see below), whose sum is σ = 41181792. Its totient is φ = 20590848.

The previous prime is 30028351. The next prime is 30028357. The reversal of 30028355 is 55382003.

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 30028355 - 2² = 30028351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30028351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428942 + ... + 429011.

It is an arithmetic number, because the mean of its divisors is an integer number (5147724).

Almost surely, 2^30028355 is an apocalyptic number.

30028355 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30028355 is a deficient number, since it is larger than the sum of its proper divisors (11153437).

30028355 is an equidigital number, since it uses as much as digits as its factorization.

30028355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857965.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 30028355 is about 5479.8134092321. The cubic root of 30028355 is about 310.8211148555.

The spelling of 30028355 in words is "thirty million, twenty-eight thousand, three hundred fifty-five".