128685150 has 72 divisors (see below), whose sum is σ = 377178984. Its totient is φ = 31195200.

The previous prime is 128685133. The next prime is 128685169. The reversal of 128685150 is 51586821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8049 + ... + 17948.

It is an arithmetic number, because the mean of its divisors is an integer number (5238597).

Almost surely, 2^128685150 is an apocalyptic number.

128685150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128685150 is an abundant number, since it is smaller than the sum of its proper divisors (248493834).

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

128685150 is a wasteful number, since it uses less digits than its factorization.

128685150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026 (or 26018 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 128685150 is about 11343.9477255495. The cubic root of 128685150 is about 504.8660233422.

It can be divided in two parts, 1286 and 85150, that added together give a square (86436 = 294²).

The spelling of 128685150 in words is "one hundred twenty-eight million, six hundred eighty-five thousand, one hundred fifty".