128633485 has 8 divisors (see below), whose sum is σ = 155539296. Its totient is φ = 102120720.

The previous prime is 128633471. The next prime is 128633489. The reversal of 128633485 is 584336821.

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

It is not a de Polignac number, because 128633485 - 2¹⁹ = 128109197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128633489) 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, 97539 + ... + 98848.

It is an arithmetic number, because the mean of its divisors is an integer number (19442412).

Almost surely, 2^128633485 is an apocalyptic number.

It is an amenable number.

128633485 is a deficient number, since it is larger than the sum of its proper divisors (26905811).

128633485 is a wasteful number, since it uses less digits than its factorization.

128633485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196523.

The product of its digits is 138240, while the sum is 40.

The square root of 128633485 is about 11341.6702914518. The cubic root of 128633485 is about 504.7984491255.

The spelling of 128633485 in words is "one hundred twenty-eight million, six hundred thirty-three thousand, four hundred eighty-five".