128847011 has 4 divisors (see below), whose sum is σ = 128927832. Its totient is φ = 128766192.

The previous prime is 128846983. The next prime is 128847031. The reversal of 128847011 is 110748821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128847011 - 2¹⁰ = 128845987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128847031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37970 + ... + 41223.

It is an arithmetic number, because the mean of its divisors is an integer number (32231958).

Almost surely, 2^128847011 is an apocalyptic number.

128847011 is a deficient number, since it is larger than the sum of its proper divisors (80821).

128847011 is an equidigital number, since it uses as much as digits as its factorization.

128847011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80820.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 128847011 is about 11351.0797283783. The cubic root of 128847011 is about 505.0776092205.

The spelling of 128847011 in words is "one hundred twenty-eight million, eight hundred forty-seven thousand, eleven".