128810285 has 8 divisors (see below), whose sum is σ = 154897920. Its totient is φ = 102831184.

The previous prime is 128810251. The next prime is 128810287. The reversal of 128810285 is 582018821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128810285 - 2¹² = 128806189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128810287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24497 + ... + 29286.

It is an arithmetic number, because the mean of its divisors is an integer number (19362240).

Almost surely, 2^128810285 is an apocalyptic number.

It is an amenable number.

128810285 is a deficient number, since it is larger than the sum of its proper divisors (26087635).

128810285 is an equidigital number, since it uses as much as digits as its factorization.

128810285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54267.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 128810285 is about 11349.4618815167. The cubic root of 128810285 is about 505.0296162744.

The spelling of 128810285 in words is "one hundred twenty-eight million, eight hundred ten thousand, two hundred eighty-five".