28246961 has 2 divisors, whose sum is σ = 28246962. Its totient is φ = 28246960.

The previous prime is 28246951. The next prime is 28246987. The reversal of 28246961 is 16964282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27363361 + 883600 = 5231^2 + 940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28246961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28246931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14123480 + 14123481.

It is an arithmetic number, because the mean of its divisors is an integer number (14123481).

Almost surely, 2^28246961 is an apocalyptic number.

It is an amenable number.

28246961 is a deficient number, since it is larger than the sum of its proper divisors (1).

28246961 is an equidigital number, since it uses as much as digits as its factorization.

28246961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 28246961 is about 5314.7870136065. The cubic root of 28246961 is about 304.5490460191.

The spelling of 28246961 in words is "twenty-eight million, two hundred forty-six thousand, nine hundred sixty-one".