128766852 has 72 divisors (see below), whose sum is σ = 333645312. Its totient is φ = 41860800.

The previous prime is 128766809. The next prime is 128766871. The reversal of 128766852 is 258667821.

It is a junction number, because it is equal to n+sod(n) for n = 128766798 and 128766807.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419283 + ... + 419589.

Almost surely, 2^128766852 is an apocalyptic number.

128766852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128766852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166822656).

128766852 is an abundant number, since it is smaller than the sum of its proper divisors (204878460).

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

128766852 is a wasteful number, since it uses less digits than its factorization.

128766852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 564 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 128766852 is about 11347.5482814571. The cubic root of 128766852 is about 504.9728469536.

The spelling of 128766852 in words is "one hundred twenty-eight million, seven hundred sixty-six thousand, eight hundred fifty-two".