128122488 has 48 divisors (see below), whose sum is σ = 373693320. Its totient is φ = 39422016.

The previous prime is 128122483. The next prime is 128122541. The reversal of 128122488 is 884221821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128122483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67506 + ... + 69377.

Almost surely, 2^128122488 is an apocalyptic number.

128122488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128122488 is an abundant number, since it is smaller than the sum of its proper divisors (245570832).

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

128122488 is a wasteful number, since it uses less digits than its factorization.

128122488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136908 (or 136901 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 128122488 is about 11319.1204605305. The cubic root of 128122488 is about 504.1291241342.

It can be divided in two parts, 12 and 8122488, that added together give a square (8122500 = 2850²).

The spelling of 128122488 in words is "one hundred twenty-eight million, one hundred twenty-two thousand, four hundred eighty-eight".