128869180 has 48 divisors (see below), whose sum is σ = 312602976. Its totient is φ = 44103680.

The previous prime is 128869177. The next prime is 128869183. The reversal of 128869180 is 81968821.

It is an interprime number because it is at equal distance from previous prime (128869177) and next prime (128869183).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128869183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13489 + ... + 20968.

It is an arithmetic number, because the mean of its divisors is an integer number (6512562).

Almost surely, 2^128869180 is an apocalyptic number.

128869180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128869180 is an abundant number, since it is smaller than the sum of its proper divisors (183733796).

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

128869180 is a wasteful number, since it uses less digits than its factorization.

128869180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34494 (or 34492 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 128869180 is about 11352.0562014113. The cubic root of 128869180 is about 505.1065748993.

The spelling of 128869180 in words is "one hundred twenty-eight million, eight hundred sixty-nine thousand, one hundred eighty".