128770488 has 96 divisors (see below), whose sum is σ = 434828160. Its totient is φ = 33445440.

The previous prime is 128770487. The next prime is 128770501. The reversal of 128770488 is 884077821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128770487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6070 + ... + 17157.

It is an arithmetic number, because the mean of its divisors is an integer number (4529460).

Almost surely, 2^128770488 is an apocalyptic number.

128770488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128770488 is an abundant number, since it is smaller than the sum of its proper divisors (306057672).

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

128770488 is a wasteful number, since it uses less digits than its factorization.

128770488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23257 (or 23250 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 128770488 is about 11347.7084911448. The cubic root of 128770488 is about 504.9775998952.

The spelling of 128770488 in words is "one hundred twenty-eight million, seven hundred seventy thousand, four hundred eighty-eight".