28948273 has 2 divisors, whose sum is σ = 28948274. Its totient is φ = 28948272.

The previous prime is 28948247. The next prime is 28948277. The reversal of 28948273 is 37284982.

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., 16224784 + 12723489 = 4028^2 + 3567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28948273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28948277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14474136 + 14474137.

It is an arithmetic number, because the mean of its divisors is an integer number (14474137).

Almost surely, 2^28948273 is an apocalyptic number.

It is an amenable number.

28948273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28948273 is an equidigital number, since it uses as much as digits as its factorization.

28948273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 28948273 is about 5380.3599321978. The cubic root of 28948273 is about 307.0489051948.

The spelling of 28948273 in words is "twenty-eight million, nine hundred forty-eight thousand, two hundred seventy-three".