128859651 has 6 divisors (see below), whose sum is σ = 186130620. Its totient is φ = 85906428.

The previous prime is 128859613. The next prime is 128859667. The reversal of 128859651 is 156958821.

It is a happy number.

128859651 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 596 + 51 = 666.

It is not a de Polignac number, because 128859651 - 2⁹ = 128859139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128859597 and 128859606.

It is not an unprimeable number, because it can be changed into a prime (128859251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7158861 + ... + 7158878.

It is an arithmetic number, because the mean of its divisors is an integer number (31021770).

Almost surely, 2^128859651 is an apocalyptic number.

128859651 is a deficient number, since it is larger than the sum of its proper divisors (57270969).

128859651 is a wasteful number, since it uses less digits than its factorization.

128859651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14317745 (or 14317742 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The square root of 128859651 is about 11351.6364899516. The cubic root of 128859651 is about 505.0941248597.

The spelling of 128859651 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, six hundred fifty-one".