28098413 has 6 divisors (see below), whose sum is σ = 32685966. Its totient is φ = 24084312.

The previous prime is 28098409. The next prime is 28098481. The reversal of 28098413 is 31489082.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24631369 + 3467044 = 4963^2 + 1862^2 .

It is not a de Polignac number, because 28098413 - 2² = 28098409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28098113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 286670 + ... + 286767.

It is an arithmetic number, because the mean of its divisors is an integer number (5447661).

Almost surely, 2^28098413 is an apocalyptic number.

It is an amenable number.

28098413 is a deficient number, since it is larger than the sum of its proper divisors (4587553).

28098413 is an equidigital number, since it uses as much as digits as its factorization.

28098413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573451 (or 573444 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28098413 is about 5300.7936198271. The cubic root of 28098413 is about 304.0142428980.

The spelling of 28098413 in words is "twenty-eight million, ninety-eight thousand, four hundred thirteen".