128130950 has 12 divisors (see below), whose sum is σ = 238323660. Its totient is φ = 51252360.

The previous prime is 128130943. The next prime is 128130971. The reversal of 128130950 is 59031821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1281260 + ... + 1281359.

It is an arithmetic number, because the mean of its divisors is an integer number (19860305).

Almost surely, 2^128130950 is an apocalyptic number.

128130950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128130950 is a deficient number, since it is larger than the sum of its proper divisors (110192710).

128130950 is a wasteful number, since it uses less digits than its factorization.

128130950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562631 (or 2562626 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 128130950 is about 11319.4942466525. The cubic root of 128130950 is about 504.1402224896.

The spelling of 128130950 in words is "one hundred twenty-eight million, one hundred thirty thousand, nine hundred fifty".