128830944 has 96 divisors (see below), whose sum is σ = 388402560. Its totient is φ = 36979200.

The previous prime is 128830937. The next prime is 128830951. The reversal of 128830944 is 449038821.

It is an interprime number because it is at equal distance from previous prime (128830937) and next prime (128830951).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×128830944² = 33194824263862272, which contains 22 as substring.

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, 16854 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (4045860).

Almost surely, 2^128830944 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 128830944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194201280).

128830944 is an abundant number, since it is smaller than the sum of its proper divisors (259571616).

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

128830944 is a wasteful number, since it uses less digits than its factorization.

128830944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464 (or 6456 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 128830944 is about 11350.3719762834. The cubic root of 128830944 is about 505.0566142456.

The spelling of 128830944 in words is "one hundred twenty-eight million, eight hundred thirty thousand, nine hundred forty-four".