28855291 has 2 divisors, whose sum is σ = 28855292. Its totient is φ = 28855290.

The previous prime is 28855283. The next prime is 28855297. The reversal of 28855291 is 19255882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28855291 - 2³ = 28855283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28855297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14427645 + 14427646.

It is an arithmetic number, because the mean of its divisors is an integer number (14427646).

Almost surely, 2^28855291 is an apocalyptic number.

28855291 is a deficient number, since it is larger than the sum of its proper divisors (1).

28855291 is an equidigital number, since it uses as much as digits as its factorization.

28855291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 40.

The square root of 28855291 is about 5371.7121106776. The cubic root of 28855291 is about 306.7198050378.

The spelling of 28855291 in words is "twenty-eight million, eight hundred fifty-five thousand, two hundred ninety-one".