128082240 has 336 divisors, whose sum is σ = 519232896. Its totient is φ = 28569600.

The previous prime is 128082187. The next prime is 128082263. The reversal of 128082240 is 42280821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 411685 + ... + 411995.

It is an arithmetic number, because the mean of its divisors is an integer number (1545336).

Almost surely, 2^128082240 is an apocalyptic number.

128082240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128082240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259616448).

128082240 is an abundant number, since it is smaller than the sum of its proper divisors (391150656).

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

128082240 is a wasteful number, since it uses less digits than its factorization.

128082240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 128082240 is about 11317.3424442313. The cubic root of 128082240 is about 504.0763300871.

The spelling of 128082240 in words is "one hundred twenty-eight million, eighty-two thousand, two hundred forty".