28038301 has 4 divisors (see below), whose sum is σ = 28722204. Its totient is φ = 27354400.

The previous prime is 28038299. The next prime is 28038337. The reversal of 28038301 is 10383082.

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 10824100 + 17214201 = 3290^2 + 4149^2 .

It is a cyclic number.

It is not a de Polignac number, because 28038301 - 2¹ = 28038299 is a prime.

It is a super-2 number, since 2×28038301² = 1572292645933202, 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 (28038371) 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, 341890 + ... + 341971.

It is an arithmetic number, because the mean of its divisors is an integer number (7180551).

Almost surely, 2^28038301 is an apocalyptic number.

It is an amenable number.

28038301 is a deficient number, since it is larger than the sum of its proper divisors (683903).

28038301 is an equidigital number, since it uses as much as digits as its factorization.

28038301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683902.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28038301 is about 5295.1204896584. The cubic root of 28038301 is about 303.7972917159.

The spelling of 28038301 in words is "twenty-eight million, thirty-eight thousand, three hundred one".