128029260 has 24 divisors (see below), whose sum is σ = 358482096. Its totient is φ = 34141120.

The previous prime is 128029241. The next prime is 128029267. The reversal of 128029260 is 62920821.

It is a super-2 number, since 2×128029260² = 32782982832295200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (128029267) 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, 1066851 + ... + 1066970.

It is an arithmetic number, because the mean of its divisors is an integer number (14936754).

Almost surely, 2^128029260 is an apocalyptic number.

128029260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128029260 is an abundant number, since it is smaller than the sum of its proper divisors (230452836).

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

128029260 is a wasteful number, since it uses less digits than its factorization.

128029260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133833 (or 2133831 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 128029260 is about 11315.0015466194. The cubic root of 128029260 is about 504.0068183759.

The spelling of 128029260 in words is "one hundred twenty-eight million, twenty-nine thousand, two hundred sixty".