28969273 has 2 divisors, whose sum is σ = 28969274. Its totient is φ = 28969272.

The previous prime is 28969267. The next prime is 28969301. The reversal of 28969273 is 37296982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28858384 + 110889 = 5372^2 + 333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28969273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28969223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14484636 + 14484637.

It is an arithmetic number, because the mean of its divisors is an integer number (14484637).

Almost surely, 2^28969273 is an apocalyptic number.

It is an amenable number.

28969273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28969273 is an equidigital number, since it uses as much as digits as its factorization.

28969273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 28969273 is about 5382.3111206990. The cubic root of 28969273 is about 307.1231349360.

The spelling of 28969273 in words is "twenty-eight million, nine hundred sixty-nine thousand, two hundred seventy-three".