128709260 has 24 divisors (see below), whose sum is σ = 272686176. Its totient is φ = 51027200.

The previous prime is 128709257. The next prime is 128709263. The reversal of 128709260 is 62907821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128709257) and next prime (128709263).

It is a self number, because there is not a number n which added to its sum of digits gives 128709260.

It is not an unprimeable number, because it can be changed into a prime (128709263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26216 + ... + 30735.

It is an arithmetic number, because the mean of its divisors is an integer number (11361924).

Almost surely, 2^128709260 is an apocalyptic number.

128709260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128709260 is an abundant number, since it is smaller than the sum of its proper divisors (143976916).

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

128709260 is a wasteful number, since it uses less digits than its factorization.

128709260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57073 (or 57071 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 128709260 is about 11345.0103569807. The cubic root of 128709260 is about 504.8975513512.

The spelling of 128709260 in words is "one hundred twenty-eight million, seven hundred nine thousand, two hundred sixty".