28830918 has 32 divisors (see below), whose sum is σ = 60219360. Its totient is φ = 9192960.

The previous prime is 28830917. The next prime is 28830943. The reversal of 28830918 is 81903882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28830911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12478 + ... + 14606.

It is an arithmetic number, because the mean of its divisors is an integer number (1881855).

Almost surely, 2^28830918 is an apocalyptic number.

28830918 is an abundant number, since it is smaller than the sum of its proper divisors (31388442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28830918 is a wasteful number, since it uses less digits than its factorization.

28830918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 28830918 is about 5369.4429878713. The cubic root of 28830918 is about 306.6334224097.

The spelling of 28830918 in words is "twenty-eight million, eight hundred thirty thousand, nine hundred eighteen".