128338630 has 64 divisors (see below), whose sum is σ = 275374080. Its totient is φ = 42134400.

The previous prime is 128338621. The next prime is 128338633. The reversal of 128338630 is 36833821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128338633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387565 + ... + 387895.

It is an arithmetic number, because the mean of its divisors is an integer number (4302720).

Almost surely, 2^128338630 is an apocalyptic number.

128338630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128338630 is an abundant number, since it is smaller than the sum of its proper divisors (147035450).

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

128338630 is a wasteful number, since it uses less digits than its factorization.

128338630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 128338630 is about 11328.6640871729. The cubic root of 128338630 is about 504.4124526443.

The spelling of 128338630 in words is "one hundred twenty-eight million, three hundred thirty-eight thousand, six hundred thirty".