28458413 has 2 divisors, whose sum is σ = 28458414. Its totient is φ = 28458412.

The previous prime is 28458401. The next prime is 28458421. The reversal of 28458413 is 31485482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26853124 + 1605289 = 5182^2 + 1267^2 .

It is a cyclic number.

It is not a de Polignac number, because 28458413 - 2⁶ = 28458349 is a prime.

It is equal to p_1768166 and since 28458413 and 1768166 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28458013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14229206 + 14229207.

It is an arithmetic number, because the mean of its divisors is an integer number (14229207).

Almost surely, 2^28458413 is an apocalyptic number.

It is an amenable number.

28458413 is a deficient number, since it is larger than the sum of its proper divisors (1).

28458413 is an equidigital number, since it uses as much as digits as its factorization.

28458413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 35.

The square root of 28458413 is about 5334.6427246818. The cubic root of 28458413 is about 305.3070919342.

The spelling of 28458413 in words is "twenty-eight million, four hundred fifty-eight thousand, four hundred thirteen".