28619011 has 2 divisors, whose sum is σ = 28619012. Its totient is φ = 28619010.

The previous prime is 28618999. The next prime is 28619029. The reversal of 28619011 is 11091682.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28619011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28619411) 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, 14309505 + 14309506.

It is an arithmetic number, because the mean of its divisors is an integer number (14309506).

Almost surely, 2^28619011 is an apocalyptic number.

28619011 is a deficient number, since it is larger than the sum of its proper divisors (1).

28619011 is an equidigital number, since it uses as much as digits as its factorization.

28619011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 28619011 is about 5349.6739152961. The cubic root of 28619011 is about 305.8803232861.

The spelling of 28619011 in words is "twenty-eight million, six hundred nineteen thousand, eleven".