28030918 has 8 divisors (see below), whose sum is σ = 42070248. Its totient is φ = 14007504.

The previous prime is 28030889. The next prime is 28030957. The reversal of 28030918 is 81903082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28030918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2605 + ... + 7927.

It is an arithmetic number, because the mean of its divisors is an integer number (5258781).

Almost surely, 2^28030918 is an apocalyptic number.

28030918 is a deficient number, since it is larger than the sum of its proper divisors (14039330).

28030918 is a wasteful number, since it uses less digits than its factorization.

28030918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7958.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 28030918 is about 5294.4232924843. The cubic root of 28030918 is about 303.7706242382.

The spelling of 28030918 in words is "twenty-eight million, thirty thousand, nine hundred eighteen".