28952293 has 2 divisors, whose sum is σ = 28952294. Its totient is φ = 28952292.

The previous prime is 28952279. The next prime is 28952327. The reversal of 28952293 is 39225982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25020004 + 3932289 = 5002^2 + 1983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28952293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28952243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14476146 + 14476147.

It is an arithmetic number, because the mean of its divisors is an integer number (14476147).

Almost surely, 2^28952293 is an apocalyptic number.

It is an amenable number.

28952293 is a deficient number, since it is larger than the sum of its proper divisors (1).

28952293 is an equidigital number, since it uses as much as digits as its factorization.

28952293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 28952293 is about 5380.7335001838. The cubic root of 28952293 is about 307.0631176657.

The spelling of 28952293 in words is "twenty-eight million, nine hundred fifty-two thousand, two hundred ninety-three".