28140799 has 8 divisors (see below), whose sum is σ = 29417472. Its totient is φ = 26868600.

The previous prime is 28140793. The next prime is 28140803. The reversal of 28140799 is 99704182.

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

It is not a de Polignac number, because 28140799 - 2¹³ = 28132607 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 (28140793) 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 7 ways as a sum of consecutive naturals, for example, 23874 + ... + 25024.

It is an arithmetic number, because the mean of its divisors is an integer number (3677184).

Almost surely, 2^28140799 is an apocalyptic number.

28140799 is a deficient number, since it is larger than the sum of its proper divisors (1276673).

28140799 is a wasteful number, since it uses less digits than its factorization.

28140799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 28140799 is about 5304.7901937777. The cubic root of 28140799 is about 304.1670329472.

The spelling of 28140799 in words is "twenty-eight million, one hundred forty thousand, seven hundred ninety-nine".