28190598 has 8 divisors (see below), whose sum is σ = 56381208. Its totient is φ = 9396864.

The previous prime is 28190593. The next prime is 28190609. The reversal of 28190598 is 89509182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

28190598 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28190593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349211 + ... + 2349222.

It is an arithmetic number, because the mean of its divisors is an integer number (7047651).

Almost surely, 2^28190598 is an apocalyptic number.

28190598 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28190598 is a wasteful number, since it uses less digits than its factorization.

28190598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698438.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 28190598 is about 5309.4818956279. The cubic root of 28190598 is about 304.3463489624.

The spelling of 28190598 in words is "twenty-eight million, one hundred ninety thousand, five hundred ninety-eight".