28084098 has 64 divisors (see below), whose sum is σ = 67350528. Its totient is φ = 7639680.

The previous prime is 28084097. The next prime is 28084099. The reversal of 28084098 is 89048082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28084097) and next prime (28084099).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28084097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80761 + ... + 81107.

It is an arithmetic number, because the mean of its divisors is an integer number (1052352).

Almost surely, 2^28084098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28084098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33675264).

28084098 is an abundant number, since it is smaller than the sum of its proper divisors (39266430).

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

28084098 is a wasteful number, since it uses less digits than its factorization.

28084098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28084098 is about 5299.4431782971. The cubic root of 28084098 is about 303.9626064925.

The spelling of 28084098 in words is "twenty-eight million, eighty-four thousand, ninety-eight".