28994208 has 48 divisors (see below), whose sum is σ = 76658400. Its totient is φ = 9595136.

The previous prime is 28994177. The next prime is 28994221. The reversal of 28994208 is 80249982.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28994208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13291 + ... + 15317.

It is an arithmetic number, because the mean of its divisors is an integer number (1597050).

Almost surely, 2^28994208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28994208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38329200).

28994208 is an abundant number, since it is smaller than the sum of its proper divisors (47664192).

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

28994208 is a wasteful number, since it uses less digits than its factorization.

28994208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 28994208 is about 5384.6270065809. The cubic root of 28994208 is about 307.2112273457.

The spelling of 28994208 in words is "twenty-eight million, nine hundred ninety-four thousand, two hundred eight".