28894208 has 88 divisors (see below), whose sum is σ = 68779200. Its totient is φ = 11870208.

The previous prime is 28894199. The next prime is 28894241. The reversal of 28894208 is 80249882.

It is a congruent number.

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, 207803 + ... + 207941.

Almost surely, 2^28894208 is an apocalyptic number.

28894208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28894208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34389600).

28894208 is an abundant number, since it is smaller than the sum of its proper divisors (39884992).

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

28894208 is a wasteful number, since it uses less digits than its factorization.

28894208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 28894208 is about 5375.3332919922. Note that the first 3 decimals coincide. The cubic root of 28894208 is about 306.8576336297.

The spelling of 28894208 in words is "twenty-eight million, eight hundred ninety-four thousand, two hundred eight".