128478283 has 2 divisors, whose sum is σ = 128478284. Its totient is φ = 128478282.

The previous prime is 128478269. The next prime is 128478313. The reversal of 128478283 is 382874821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128478283 - 2¹⁷ = 128347211 is a prime.

It is not a weakly prime, because it can be changed into another prime (128478583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64239141 + 64239142.

It is an arithmetic number, because the mean of its divisors is an integer number (64239142).

Almost surely, 2^128478283 is an apocalyptic number.

128478283 is a deficient number, since it is larger than the sum of its proper divisors (1).

128478283 is an equidigital number, since it uses as much as digits as its factorization.

128478283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The square root of 128478283 is about 11334.8261124730. The cubic root of 128478283 is about 504.5953468534.

The spelling of 128478283 in words is "one hundred twenty-eight million, four hundred seventy-eight thousand, two hundred eighty-three".