128269072 has 20 divisors (see below), whose sum is σ = 256539136. Its totient is φ = 62065440.

The previous prime is 128269039. The next prime is 128269081. The reversal of 128269072 is 270962821.

128269072 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128808 + ... + 129799.

Almost surely, 2^128269072 is an apocalyptic number.

It is an amenable number.

128269072 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128269072 is a wasteful number, since it uses less digits than its factorization.

128269072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258646 (or 258640 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 128269072 is about 11325.5936709737. The cubic root of 128269072 is about 504.3213076736.

The spelling of 128269072 in words is "one hundred twenty-eight million, two hundred sixty-nine thousand, seventy-two".