28908606427 has 2 divisors, whose sum is σ = 28908606428. Its totient is φ = 28908606426.

The previous prime is 28908606373. The next prime is 28908606473. The reversal of 28908606427 is 72460680982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28908606427 is a prime.

It is not a weakly prime, because it can be changed into another prime (28908606227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14454303213 + 14454303214.

It is an arithmetic number, because the mean of its divisors is an integer number (14454303214).

Almost surely, 2^28908606427 is an apocalyptic number.

28908606427 is a deficient number, since it is larger than the sum of its proper divisors (1).

28908606427 is an equidigital number, since it uses as much as digits as its factorization.

28908606427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 28908606427 in words is "twenty-eight billion, nine hundred eight million, six hundred six thousand, four hundred twenty-seven".