128790336 has 56 divisors (see below), whose sum is σ = 343997280. Its totient is φ = 42522112.

The previous prime is 128790329. The next prime is 128790383. The reversal of 128790336 is 633097821.

It is a junction number, because it is equal to n+sod(n) for n = 128790294 and 128790303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17410 + ... + 23678.

Almost surely, 2^128790336 is an apocalyptic number.

128790336 is a gapful number since it is divisible by the number (16) 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 128790336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171998640).

128790336 is an abundant number, since it is smaller than the sum of its proper divisors (215206944).

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

128790336 is a wasteful number, since it uses less digits than its factorization.

128790336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391 (or 6381 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 128790336 is about 11348.5829952466. The cubic root of 128790336 is about 505.0035434186.

The spelling of 128790336 in words is "one hundred twenty-eight million, seven hundred ninety thousand, three hundred thirty-six".