28675013 has 2 divisors, whose sum is σ = 28675014. Its totient is φ = 28675012.

The previous prime is 28674977. The next prime is 28675019. The reversal of 28675013 is 31057682.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18645124 + 10029889 = 4318^2 + 3167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28675013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28675019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14337506 + 14337507.

It is an arithmetic number, because the mean of its divisors is an integer number (14337507).

Almost surely, 2^28675013 is an apocalyptic number.

It is an amenable number.

28675013 is a deficient number, since it is larger than the sum of its proper divisors (1).

28675013 is an equidigital number, since it uses as much as digits as its factorization.

28675013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28675013 is about 5354.9055080365. The cubic root of 28675013 is about 306.0797099649.

The spelling of 28675013 in words is "twenty-eight million, six hundred seventy-five thousand, thirteen".