128284565260 has 48 divisors (see below), whose sum is σ = 273874970880. Its totient is φ = 50461367040.

The previous prime is 128284565251. The next prime is 128284565263. The reversal of 128284565260 is 62565482821.

It is a super-3 number, since 3×128284565260³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (128284565263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7368646 + ... + 7386034.

It is an arithmetic number, because the mean of its divisors is an integer number (5705728560).

Almost surely, 2^128284565260 is an apocalyptic number.

128284565260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128284565260 is an abundant number, since it is smaller than the sum of its proper divisors (145590405620).

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

128284565260 is a wasteful number, since it uses less digits than its factorization.

128284565260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23506 (or 23504 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 128284565260 in words is "one hundred twenty-eight billion, two hundred eighty-four million, five hundred sixty-five thousand, two hundred sixty".