128918050 has 48 divisors (see below), whose sum is σ = 251948160. Its totient is φ = 49008960.

The previous prime is 128918047. The next prime is 128918051. The reversal of 128918050 is 50819821.

It is a junction number, because it is equal to n+sod(n) for n = 128917997 and 128918015.

It is not an unprimeable number, because it can be changed into a prime (128918051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96487 + ... + 97813.

It is an arithmetic number, because the mean of its divisors is an integer number (5248920).

Almost surely, 2^128918050 is an apocalyptic number.

128918050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128918050 is a deficient number, since it is larger than the sum of its proper divisors (123030110).

128918050 is a wasteful number, since it uses less digits than its factorization.

128918050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 128918050 is about 11354.2084708711. The cubic root of 128918050 is about 505.1704159684.

The spelling of 128918050 in words is "one hundred twenty-eight million, nine hundred eighteen thousand, fifty".