28234649 has 2 divisors, whose sum is σ = 28234650. Its totient is φ = 28234648.

The previous prime is 28234601. The next prime is 28234673. The reversal of 28234649 is 94643282.

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., 27040000 + 1194649 = 5200^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 28234649 - 2²⁰ = 27186073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28234949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14117324 + 14117325.

It is an arithmetic number, because the mean of its divisors is an integer number (14117325).

Almost surely, 2^28234649 is an apocalyptic number.

It is an amenable number.

28234649 is a deficient number, since it is larger than the sum of its proper divisors (1).

28234649 is an equidigital number, since it uses as much as digits as its factorization.

28234649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 28234649 is about 5313.6286095285. The cubic root of 28234649 is about 304.5047916682.

The spelling of 28234649 in words is "twenty-eight million, two hundred thirty-four thousand, six hundred forty-nine".