28073801 has 4 divisors (see below), whose sum is σ = 32084352. Its totient is φ = 24063252.

The previous prime is 28073791. The next prime is 28073803. The reversal of 28073801 is 10837082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28073801 - 2¹⁰ = 28072777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28073803) 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, 2005265 + ... + 2005278.

It is an arithmetic number, because the mean of its divisors is an integer number (8021088).

Almost surely, 2^28073801 is an apocalyptic number.

It is an amenable number.

28073801 is a deficient number, since it is larger than the sum of its proper divisors (4010551).

28073801 is an equidigital number, since it uses as much as digits as its factorization.

28073801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010550.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 28073801 is about 5298.4715720668. The cubic root of 28073801 is about 303.9254527793.

The spelling of 28073801 in words is "twenty-eight million, seventy-three thousand, eight hundred one".