128980140 has 48 divisors (see below), whose sum is σ = 365729280. Its totient is φ = 33958080.

The previous prime is 128980129. The next prime is 128980141. The reversal of 128980140 is 41089821.

It is not an unprimeable number, because it can be changed into a prime (128980141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8866 + ... + 18345.

It is an arithmetic number, because the mean of its divisors is an integer number (7619360).

Almost surely, 2^128980140 is an apocalyptic number.

128980140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128980140 is an abundant number, since it is smaller than the sum of its proper divisors (236749140).

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

128980140 is a wasteful number, since it uses less digits than its factorization.

128980140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27302 (or 27300 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 128980140 is about 11356.9423701981. The cubic root of 128980140 is about 505.2515036489.

The spelling of 128980140 in words is "one hundred twenty-eight million, nine hundred eighty thousand, one hundred forty".