28198368 has 240 divisors, whose sum is σ = 96598656. Its totient is φ = 7983360.

The previous prime is 28198361. The next prime is 28198369. The reversal of 28198368 is 86389182.

28198368 is a `hidden beast` number, since 281 + 9 + 8 + 368 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28198361) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 655755 + ... + 655797.

Almost surely, 2^28198368 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 28198368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48299328).

28198368 is an abundant number, since it is smaller than the sum of its proper divisors (68400288).

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

28198368 is a wasteful number, since it uses less digits than its factorization.

28198368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 82 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 28198368 is about 5310.2135550277. The cubic root of 28198368 is about 304.3743080938.

The spelling of 28198368 in words is "twenty-eight million, one hundred ninety-eight thousand, three hundred sixty-eight".