30428858 has 8 divisors (see below), whose sum is σ = 45666720. Its totient is φ = 15206620.

The previous prime is 30428857. The next prime is 30428869. The reversal of 30428858 is 85882403.

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

It is not an unprimeable number, because it can be changed into a prime (30428857) 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 3 ways as a sum of consecutive naturals, for example, 5393 + ... + 9483.

It is an arithmetic number, because the mean of its divisors is an integer number (5708340).

Almost surely, 2^30428858 is an apocalyptic number.

30428858 is a deficient number, since it is larger than the sum of its proper divisors (15237862).

30428858 is a wasteful number, since it uses less digits than its factorization.

30428858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 30428858 is about 5516.2358542760. The cubic root of 30428858 is about 312.1968747032.

The spelling of 30428858 in words is "thirty million, four hundred twenty-eight thousand, eight hundred fifty-eight".