28376801 has 4 divisors (see below), whose sum is σ = 28388100. Its totient is φ = 28365504.

The previous prime is 28376771. The next prime is 28376813. The reversal of 28376801 is 10867382.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10867382 = 2 ⋅5433691.

It can be written as a sum of positive squares in 2 ways, for example, as 16810000 + 11566801 = 4100^2 + 3401^2 .

It is a cyclic number.

It is not a de Polignac number, because 28376801 - 2¹⁰ = 28375777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28372801) 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, 5 + ... + 7533.

It is an arithmetic number, because the mean of its divisors is an integer number (7097025).

Almost surely, 2^28376801 is an apocalyptic number.

It is an amenable number.

28376801 is a deficient number, since it is larger than the sum of its proper divisors (11299).

28376801 is an equidigital number, since it uses as much as digits as its factorization.

28376801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11298.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 28376801 is about 5326.9879857195. The cubic root of 28376801 is about 305.0149629853.

The spelling of 28376801 in words is "twenty-eight million, three hundred seventy-six thousand, eight hundred one".