128927760 has 240 divisors, whose sum is σ = 455095872. Its totient is φ = 29998080.

The previous prime is 128927759. The next prime is 128927761. The reversal of 128927760 is 67729821.

It is an interprime number because it is at equal distance from previous prime (128927759) and next prime (128927761).

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128927761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2998299 + ... + 2998341.

Almost surely, 2^128927760 is an apocalyptic number.

128927760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128927760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227547936).

128927760 is an abundant number, since it is smaller than the sum of its proper divisors (326168112).

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

128927760 is a wasteful number, since it uses less digits than its factorization.

128927760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 128927760 is about 11354.6360575758. The cubic root of 128927760 is about 505.1830986548.

The spelling of 128927760 in words is "one hundred twenty-eight million, nine hundred twenty-seven thousand, seven hundred sixty".