128238600 has 192 divisors, whose sum is σ = 478540800. Its totient is φ = 27751680.

The previous prime is 128238571. The next prime is 128238601. The reversal of 128238600 is 6832821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (128238601) 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, 78997 + ... + 80603.

It is an arithmetic number, because the mean of its divisors is an integer number (2492400).

Almost surely, 2^128238600 is an apocalyptic number.

128238600 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 128238600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239270400).

128238600 is an abundant number, since it is smaller than the sum of its proper divisors (350302200).

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

128238600 is a wasteful number, since it uses less digits than its factorization.

128238600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 128238600 is about 11324.2483194250. The cubic root of 128238600 is about 504.2813684642.

The spelling of 128238600 in words is "one hundred twenty-eight million, two hundred thirty-eight thousand, six hundred".