28956337 has 2 divisors, whose sum is σ = 28956338. Its totient is φ = 28956336.

The previous prime is 28956331. The next prime is 28956349. The reversal of 28956337 is 73365982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15295921 + 13660416 = 3911^2 + 3696^2 .

It is a cyclic number.

It is not a de Polignac number, because 28956337 - 2¹⁵ = 28923569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28956293 and 28956302.

It is not a weakly prime, because it can be changed into another prime (28956331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14478168 + 14478169.

It is an arithmetic number, because the mean of its divisors is an integer number (14478169).

Almost surely, 2^28956337 is an apocalyptic number.

It is an amenable number.

28956337 is a deficient number, since it is larger than the sum of its proper divisors (1).

28956337 is an equidigital number, since it uses as much as digits as its factorization.

28956337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 28956337 is about 5381.1092722598. The cubic root of 28956337 is about 307.0774136599.

The spelling of 28956337 in words is "twenty-eight million, nine hundred fifty-six thousand, three hundred thirty-seven".