28854013 has 2 divisors, whose sum is σ = 28854014. Its totient is φ = 28854012.

The previous prime is 28853987. The next prime is 28854017. The reversal of 28854013 is 31045882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 8305924 = 4533^2 + 2882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28854013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28854017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14427006 + 14427007.

It is an arithmetic number, because the mean of its divisors is an integer number (14427007).

Almost surely, 2^28854013 is an apocalyptic number.

It is an amenable number.

28854013 is a deficient number, since it is larger than the sum of its proper divisors (1).

28854013 is an equidigital number, since it uses as much as digits as its factorization.

28854013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 28854013 is about 5371.5931528737. The cubic root of 28854013 is about 306.7152767671.

Adding to 28854013 its reverse (31045882), we get a palindrome (59899895).

The spelling of 28854013 in words is "twenty-eight million, eight hundred fifty-four thousand, thirteen".