128299875 has 64 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 58896000.

The previous prime is 128299817. The next prime is 128299879. The reversal of 128299875 is 578992821.

It is not a de Polignac number, because 128299875 - 2¹² = 128295779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128299879) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77557 + ... + 79193.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^128299875 is an apocalyptic number.

128299875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128299875 is a deficient number, since it is larger than the sum of its proper divisors (117007005).

128299875 is a wasteful number, since it uses less digits than its factorization.

128299875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1675 counting only the distinct ones).

The product of its digits is 725760, while the sum is 51.

The square root of 128299875 is about 11326.9534739046. The cubic root of 128299875 is about 504.3616742916.

It can be divided in two parts, 128 and 299875, that added together give a palindrome (300003).

The spelling of 128299875 in words is "one hundred twenty-eight million, two hundred ninety-nine thousand, eight hundred seventy-five".