128377260 has 144 divisors (see below), whose sum is σ = 443439360. Its totient is φ = 29758080.

The previous prime is 128377247. The next prime is 128377261. The reversal of 128377260 is 62773821.

128377260 is a `hidden beast` number, since 1 + 28 + 377 + 260 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128377261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44131 + ... + 46949.

It is an arithmetic number, because the mean of its divisors is an integer number (3079440).

Almost surely, 2^128377260 is an apocalyptic number.

128377260 is a gapful number since it is divisible by the number (10) 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 128377260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221719680).

128377260 is an abundant number, since it is smaller than the sum of its proper divisors (315062100).

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

128377260 is a wasteful number, since it uses less digits than its factorization.

128377260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 128377260 is about 11330.3689260324. The cubic root of 128377260 is about 504.4630570448.

The spelling of 128377260 in words is "one hundred twenty-eight million, three hundred seventy-seven thousand, two hundred sixty".