101128489 has 8 divisors (see below), whose sum is σ = 126082368. Its totient is φ = 78801360.

The previous prime is 101128471. The next prime is 101128513. The reversal of 101128489 is 984821101.

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

It is not a de Polignac number, because 101128489 - 2⁵ = 101128457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101128409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656602 + ... + 656755.

It is an arithmetic number, because the mean of its divisors is an integer number (15760296).

Almost surely, 2^101128489 is an apocalyptic number.

It is an amenable number.

101128489 is a deficient number, since it is larger than the sum of its proper divisors (24953879).

101128489 is a wasteful number, since it uses less digits than its factorization.

101128489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313375.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 101128489 is about 10056.2661559845. The cubic root of 101128489 is about 465.8983504271.

The spelling of 101128489 in words is "one hundred one million, one hundred twenty-eight thousand, four hundred eighty-nine".