28803053 has 4 divisors (see below), whose sum is σ = 28888860. Its totient is φ = 28717248.

The previous prime is 28803043. The next prime is 28803059. The reversal of 28803053 is 35030882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18550249 + 10252804 = 4307^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 28803053 - 2⁴ = 28803037 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 (28803059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42398 + ... + 43071.

It is an arithmetic number, because the mean of its divisors is an integer number (7222215).

Almost surely, 2^28803053 is an apocalyptic number.

It is an amenable number.

28803053 is a deficient number, since it is larger than the sum of its proper divisors (85807).

28803053 is an equidigital number, since it uses as much as digits as its factorization.

28803053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85806.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28803053 is about 5366.8475849422. The cubic root of 28803053 is about 306.5346037909.

The spelling of 28803053 in words is "twenty-eight million, eight hundred three thousand, fifty-three".