269440128 has 128 divisors (see below), whose sum is σ = 810777600. Its totient is φ = 88058880.

The previous prime is 269440109. The next prime is 269440133. The reversal of 269440128 is 821044962.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 269440092 and 269440101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182433 + ... + 183903.

It is an arithmetic number, because the mean of its divisors is an integer number (6334200).

Almost surely, 2^269440128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 269440128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405388800).

269440128 is an abundant number, since it is smaller than the sum of its proper divisors (541337472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

269440128 is a wasteful number, since it uses less digits than its factorization.

269440128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 269440128 is about 16414.6315219075. The cubic root of 269440128 is about 645.8833542869.

The spelling of 269440128 in words is "two hundred sixty-nine million, four hundred forty thousand, one hundred twenty-eight".