128850727 has 4 divisors (see below), whose sum is σ = 130963096. Its totient is φ = 126738360.

The previous prime is 128850707. The next prime is 128850779. The reversal of 128850727 is 727058821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128850727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128850727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128850707) 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, 1056093 + ... + 1056214.

It is an arithmetic number, because the mean of its divisors is an integer number (32740774).

Almost surely, 2^128850727 is an apocalyptic number.

128850727 is a deficient number, since it is larger than the sum of its proper divisors (2112369).

128850727 is an equidigital number, since it uses as much as digits as its factorization.

128850727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112368.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 128850727 is about 11351.2434120672. The cubic root of 128850727 is about 505.0824647215.

The spelling of 128850727 in words is "one hundred twenty-eight million, eight hundred fifty thousand, seven hundred twenty-seven".