128906260 has 192 divisors, whose sum is σ = 354816000. Its totient is φ = 39118464.

The previous prime is 128906249. The next prime is 128906269. The reversal of 128906260 is 62609821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128906269) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2997799 + ... + 2997841.

It is an arithmetic number, because the mean of its divisors is an integer number (1848000).

Almost surely, 2^128906260 is an apocalyptic number.

128906260 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 128906260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177408000).

128906260 is an abundant number, since it is smaller than the sum of its proper divisors (225909740).

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

128906260 is a wasteful number, since it uses less digits than its factorization.

128906260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 128906260 is about 11353.6892682511. The cubic root of 128906260 is about 505.1550156404.

The spelling of 128906260 in words is "one hundred twenty-eight million, nine hundred six thousand, two hundred sixty".