28798208 has 72 divisors (see below), whose sum is σ = 61712448. Its totient is φ = 13381632.

The previous prime is 28798201. The next prime is 28798213. The reversal of 28798208 is 80289782.

It is a super-2 number, since 2×28798208² = 1658673568022528, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28798201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394460 + ... + 394532.

Almost surely, 2^28798208 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 28798208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30856224).

28798208 is an abundant number, since it is smaller than the sum of its proper divisors (32914240).

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

28798208 is an equidigital number, since it uses as much as digits as its factorization.

28798208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 28798208 is about 5366.3961836599. The cubic root of 28798208 is about 306.5174152955.

The spelling of 28798208 in words is "twenty-eight million, seven hundred ninety-eight thousand, two hundred eight".