28934413 has 2 divisors, whose sum is σ = 28934414. Its totient is φ = 28934412.

The previous prime is 28934393. The next prime is 28934453. The reversal of 28934413 is 31443982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 8168164 = 4557^2 + 2858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28934413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28934453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14467206 + 14467207.

It is an arithmetic number, because the mean of its divisors is an integer number (14467207).

Almost surely, 2^28934413 is an apocalyptic number.

It is an amenable number.

28934413 is a deficient number, since it is larger than the sum of its proper divisors (1).

28934413 is an equidigital number, since it uses as much as digits as its factorization.

28934413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 28934413 is about 5379.0717600716. The cubic root of 28934413 is about 306.9998938980. Note that the first 3 decimals are identical.

The spelling of 28934413 in words is "twenty-eight million, nine hundred thirty-four thousand, four hundred thirteen".