128422760 has 32 divisors (see below), whose sum is σ = 305949960. Its totient is φ = 48347136.

The previous prime is 128422757. The next prime is 128422771. The reversal of 128422760 is 67224821.

It can be written as a sum of positive squares in 4 ways, for example, as 113507716 + 14915044 = 10654^2 + 3862^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93749 + ... + 95108.

Almost surely, 2^128422760 is an apocalyptic number.

128422760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128422760 is an abundant number, since it is smaller than the sum of its proper divisors (177527200).

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

128422760 is a wasteful number, since it uses less digits than its factorization.

128422760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188885 (or 188881 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 128422760 is about 11332.3766262863. The cubic root of 128422760 is about 504.5226479670.

The spelling of 128422760 in words is "one hundred twenty-eight million, four hundred twenty-two thousand, seven hundred sixty".