28120798 has 8 divisors (see below), whose sum is σ = 44401320. Its totient is φ = 13320360.

The previous prime is 28120759. The next prime is 28120811. The reversal of 28120798 is 89702182.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369973 + ... + 370048.

It is an arithmetic number, because the mean of its divisors is an integer number (5550165).

Almost surely, 2^28120798 is an apocalyptic number.

28120798 is a deficient number, since it is larger than the sum of its proper divisors (16280522).

28120798 is a wasteful number, since it uses less digits than its factorization.

28120798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740042.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 28120798 is about 5302.9046757414. The cubic root of 28120798 is about 304.0949538909.

The spelling of 28120798 in words is "twenty-eight million, one hundred twenty thousand, seven hundred ninety-eight".