128900269 has 8 divisors (see below), whose sum is σ = 132233472. Its totient is φ = 125576160.

The previous prime is 128900251. The next prime is 128900323. The reversal of 128900269 is 962009821.

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 128900269 - 2¹³ = 128892077 is a prime.

It is a super-2 number, since 2×128900269² = 33230558696544722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128900209) 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, 33562 + ... + 37204.

It is an arithmetic number, because the mean of its divisors is an integer number (16529184).

Almost surely, 2^128900269 is an apocalyptic number.

It is an amenable number.

128900269 is a deficient number, since it is larger than the sum of its proper divisors (3333203).

128900269 is an equidigital number, since it uses as much as digits as its factorization.

128900269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 128900269 is about 11353.4254302391. The cubic root of 128900269 is about 505.1471897195.

The spelling of 128900269 in words is "one hundred twenty-eight million, nine hundred thousand, two hundred sixty-nine".