28090349 has 8 divisors (see below), whose sum is σ = 32786688. Its totient is φ = 23564880.

The previous prime is 28090339. The next prime is 28090351. The reversal of 28090349 is 94309082.

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

It is a cyclic number.

It is not a de Polignac number, because 28090349 - 2⁴ = 28090333 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 (28090319) 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, 42362 + ... + 43019.

It is an arithmetic number, because the mean of its divisors is an integer number (4098336).

Almost surely, 2^28090349 is an apocalyptic number.

It is an amenable number.

28090349 is a deficient number, since it is larger than the sum of its proper divisors (4696339).

28090349 is an equidigital number, since it uses as much as digits as its factorization.

28090349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85435.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 28090349 is about 5300.0329244260. The cubic root of 28090349 is about 303.9851569680.

The spelling of 28090349 in words is "twenty-eight million, ninety thousand, three hundred forty-nine".