28846813 has 2 divisors, whose sum is σ = 28846814. Its totient is φ = 28846812.

The previous prime is 28846801. The next prime is 28846823. The reversal of 28846813 is 31864882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 6775609 = 4698^2 + 2603^2 .

It is a cyclic number.

It is not a de Polignac number, because 28846813 - 2⁵ = 28846781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28846823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14423406 + 14423407.

It is an arithmetic number, because the mean of its divisors is an integer number (14423407).

Almost surely, 2^28846813 is an apocalyptic number.

It is an amenable number.

28846813 is a deficient number, since it is larger than the sum of its proper divisors (1).

28846813 is an equidigital number, since it uses as much as digits as its factorization.

28846813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 40.

The square root of 28846813 is about 5370.9229188288. The cubic root of 28846813 is about 306.6897628845.

The spelling of 28846813 in words is "twenty-eight million, eight hundred forty-six thousand, eight hundred thirteen".