128278360 has 64 divisors (see below), whose sum is σ = 344217600. Its totient is φ = 42066816.

The previous prime is 128278357. The next prime is 128278361. The reversal of 128278360 is 63872821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128278361) 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, 3520 + ... + 16399.

It is an arithmetic number, because the mean of its divisors is an integer number (5378400).

Almost surely, 2^128278360 is an apocalyptic number.

128278360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128278360 is an abundant number, since it is smaller than the sum of its proper divisors (215939240).

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

128278360 is a wasteful number, since it uses less digits than its factorization.

128278360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19960 (or 19956 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 128278360 is about 11326.0037082812. The cubic root of 128278360 is about 504.3334800629. Note that the first 3 decimals are identical.

The spelling of 128278360 in words is "one hundred twenty-eight million, two hundred seventy-eight thousand, three hundred sixty".