128837968 has 80 divisors (see below), whose sum is σ = 304694784. Its totient is φ = 51517440.

The previous prime is 128837957. The next prime is 128838023. The reversal of 128837968 is 869738821.

It is a congruent number.

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, 298713 + ... + 299143.

Almost surely, 2^128837968 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 128837968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152347392).

128837968 is an abundant number, since it is smaller than the sum of its proper divisors (175856816).

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

128837968 is a wasteful number, since it uses less digits than its factorization.

128837968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 614 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 128837968 is about 11350.6813892383. The cubic root of 128837968 is about 505.0657928200.

The spelling of 128837968 in words is "one hundred twenty-eight million, eight hundred thirty-seven thousand, nine hundred sixty-eight".