28956757 has 2 divisors, whose sum is σ = 28956758. Its totient is φ = 28956756.

The previous prime is 28956751. The next prime is 28956827. The reversal of 28956757 is 75765982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19660356 + 9296401 = 4434^2 + 3049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28956757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28956757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28956751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14478378 + 14478379.

It is an arithmetic number, because the mean of its divisors is an integer number (14478379).

Almost surely, 2^28956757 is an apocalyptic number.

It is an amenable number.

28956757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28956757 is an equidigital number, since it uses as much as digits as its factorization.

28956757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The square root of 28956757 is about 5381.1482975291. The cubic root of 28956757 is about 307.0788983308.

The spelling of 28956757 in words is "twenty-eight million, nine hundred fifty-six thousand, seven hundred fifty-seven".