28055503 has 8 divisors (see below), whose sum is σ = 32607360. Its totient is φ = 23639640.

The previous prime is 28055483. The next prime is 28055539. The reversal of 28055503 is 30555082.

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 28055503 - 2¹³ = 28047311 is a prime.

It is a super-2 number, since 2×28055503² = 1574222497166018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33553 + ... + 34378.

It is an arithmetic number, because the mean of its divisors is an integer number (4075920).

Almost surely, 2^28055503 is an apocalyptic number.

28055503 is a deficient number, since it is larger than the sum of its proper divisors (4551857).

28055503 is an equidigital number, since it uses as much as digits as its factorization.

28055503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67997.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 28055503 is about 5296.7445662407. The cubic root of 28055503 is about 303.8594073751.

The spelling of 28055503 in words is "twenty-eight million, fifty-five thousand, five hundred three".