28054901 has 6 divisors (see below), whose sum is σ = 32635350. Its totient is φ = 24047016.

The previous prime is 28054889. The next prime is 28054903. The reversal of 28054901 is 10945082.

It can be written as a sum of positive squares in only one way, i.e., 17230801 + 10824100 = 4151^2 + 3290^2 .

It is a de Polignac number, because none of the positive numbers 2^k-28054901 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 (28054903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 286226 + ... + 286323.

It is an arithmetic number, because the mean of its divisors is an integer number (5439225).

Almost surely, 2^28054901 is an apocalyptic number.

It is an amenable number.

28054901 is a deficient number, since it is larger than the sum of its proper divisors (4580449).

28054901 is an equidigital number, since it uses as much as digits as its factorization.

28054901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572563 (or 572556 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28054901 is about 5296.6877385778. The cubic root of 28054901 is about 303.8572340086.

Adding to 28054901 its reverse (10945082), we get a palindrome (38999983).

The spelling of 28054901 in words is "twenty-eight million, fifty-four thousand, nine hundred one".