28098928 has 40 divisors (see below), whose sum is σ = 63964656. Its totient is φ = 11788800.

The previous prime is 28098887. The next prime is 28098937. The reversal of 28098928 is 82989082.

It is a happy number.

It is a super-3 number, since 3×28098928³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3853 + ... + 8428.

Almost surely, 2^28098928 is an apocalyptic number.

It is an amenable number.

28098928 is an abundant number, since it is smaller than the sum of its proper divisors (35865728).

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

28098928 is a wasteful number, since it uses less digits than its factorization.

28098928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12313 (or 12307 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 28098928 is about 5300.8421972362. The cubic root of 28098928 is about 304.0161002553.

The spelling of 28098928 in words is "twenty-eight million, ninety-eight thousand, nine hundred twenty-eight".