128769960 has 64 divisors (see below), whose sum is σ = 421433280. Its totient is φ = 31216640.

The previous prime is 128769959. The next prime is 128769961. The reversal of 128769960 is 69967821.

It is an interprime number because it is at equal distance from previous prime (128769959) and next prime (128769961).

It is not an unprimeable number, because it can be changed into a prime (128769961) 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 15 ways as a sum of consecutive naturals, for example, 47457 + ... + 50096.

It is an arithmetic number, because the mean of its divisors is an integer number (6584895).

Almost surely, 2^128769960 is an apocalyptic number.

128769960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128769960 is an abundant number, since it is smaller than the sum of its proper divisors (292663320).

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

128769960 is a wasteful number, since it uses less digits than its factorization.

128769960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97578 (or 97574 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 128769960 is about 11347.6852265121. The cubic root of 128769960 is about 504.9769097046.

The spelling of 128769960 in words is "one hundred twenty-eight million, seven hundred sixty-nine thousand, nine hundred sixty".