28412801 has 4 divisors (see below), whose sum is σ = 28424004. Its totient is φ = 28401600.

The previous prime is 28412789. The next prime is 28412803. The reversal of 28412801 is 10821482.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 5755201 + 22657600 = 2399^2 + 4760^2 .

It is a cyclic number.

It is not a de Polignac number, because 28412801 - 2⁶ = 28412737 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 (28412803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221 + ... + 7541.

It is an arithmetic number, because the mean of its divisors is an integer number (7106001).

Almost surely, 2^28412801 is an apocalyptic number.

It is an amenable number.

28412801 is a deficient number, since it is larger than the sum of its proper divisors (11203).

28412801 is an equidigital number, since it uses as much as digits as its factorization.

28412801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11202.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 28412801 is about 5330.3659349054. The cubic root of 28412801 is about 305.1438934038.

The spelling of 28412801 in words is "twenty-eight million, four hundred twelve thousand, eight hundred one".