28859418 has 48 divisors (see below), whose sum is σ = 71847360. Its totient is φ = 8201088.

The previous prime is 28859417. The next prime is 28859443. The reversal of 28859418 is 81495882.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28859417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28098 + ... + 29106.

It is an arithmetic number, because the mean of its divisors is an integer number (1496820).

Almost surely, 2^28859418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28859418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35923680).

28859418 is an abundant number, since it is smaller than the sum of its proper divisors (42987942).

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

28859418 is a wasteful number, since it uses less digits than its factorization.

28859418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1248 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 28859418 is about 5372.0962388997. The cubic root of 28859418 is about 306.7344271082.

The spelling of 28859418 in words is "twenty-eight million, eight hundred fifty-nine thousand, four hundred eighteen".