128950240 has 48 divisors (see below), whose sum is σ = 315161280. Its totient is φ = 49799680.

The previous prime is 128950181. The next prime is 128950247. The reversal of 128950240 is 42059821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128950247) 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, 9256 + ... + 18535.

It is an arithmetic number, because the mean of its divisors is an integer number (6565860).

Almost surely, 2^128950240 is an apocalyptic number.

128950240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128950240 is an abundant number, since it is smaller than the sum of its proper divisors (186211040).

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

128950240 is a wasteful number, since it uses less digits than its factorization.

128950240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27835 (or 27827 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 128950240 is about 11355.6259184600. The cubic root of 128950240 is about 505.2124583936.

It can be divided in two parts, 1289 and 50240, that added together give a square (51529 = 227²).

The spelling of 128950240 in words is "one hundred twenty-eight million, nine hundred fifty thousand, two hundred forty".