28748680427 has 2 divisors, whose sum is σ = 28748680428. Its totient is φ = 28748680426.

The previous prime is 28748680333. The next prime is 28748680447. The reversal of 28748680427 is 72408684782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28748680427 - 2¹² = 28748676331 is a prime.

It is not a weakly prime, because it can be changed into another prime (28748680447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14374340213 + 14374340214.

It is an arithmetic number, because the mean of its divisors is an integer number (14374340214).

Almost surely, 2^28748680427 is an apocalyptic number.

28748680427 is a deficient number, since it is larger than the sum of its proper divisors (1).

28748680427 is an equidigital number, since it uses as much as digits as its factorization.

28748680427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9633792, while the sum is 56.

The spelling of 28748680427 in words is "twenty-eight billion, seven hundred forty-eight million, six hundred eighty thousand, four hundred twenty-seven".