28313413 has 2 divisors, whose sum is σ = 28313414. Its totient is φ = 28313412.

The previous prime is 28313387. The next prime is 28313429. The reversal of 28313413 is 31431382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17698849 + 10614564 = 4207^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 28313413 - 2⁹ = 28312901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28313443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14156706 + 14156707.

It is an arithmetic number, because the mean of its divisors is an integer number (14156707).

Almost surely, 2^28313413 is an apocalyptic number.

It is an amenable number.

28313413 is a deficient number, since it is larger than the sum of its proper divisors (1).

28313413 is an equidigital number, since it uses as much as digits as its factorization.

28313413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 28313413 is about 5321.0349557206. The cubic root of 28313413 is about 304.7876798765.

Adding to 28313413 its reverse (31431382), we get a palindrome (59744795).

The spelling of 28313413 in words is "twenty-eight million, three hundred thirteen thousand, four hundred thirteen".