128850656 has 24 divisors (see below), whose sum is σ = 276736824. Its totient is φ = 58568320.

The previous prime is 128850653. The next prime is 128850671. The reversal of 128850656 is 656058821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128850653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182675 + ... + 183378.

It is an arithmetic number, because the mean of its divisors is an integer number (11530701).

Almost surely, 2^128850656 is an apocalyptic number.

128850656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128850656 is an abundant number, since it is smaller than the sum of its proper divisors (147886168).

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

128850656 is a wasteful number, since it uses less digits than its factorization.

128850656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366074 (or 366066 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 128850656 is about 11351.2402846561. The cubic root of 128850656 is about 505.0823719504.

The spelling of 128850656 in words is "one hundred twenty-eight million, eight hundred fifty thousand, six hundred fifty-six".