128622860 has 24 divisors (see below), whose sum is σ = 270324096. Its totient is φ = 51408000.

The previous prime is 128622829. The next prime is 128622883. The reversal of 128622860 is 68226821.

It is a super-2 number, since 2×128622860² = 33087680229159200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128622860.

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, 41360 + ... + 44360.

It is an arithmetic number, because the mean of its divisors is an integer number (11263504).

Almost surely, 2^128622860 is an apocalyptic number.

128622860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128622860 is an abundant number, since it is smaller than the sum of its proper divisors (141701236).

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

128622860 is a wasteful number, since it uses less digits than its factorization.

128622860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153 (or 5151 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 128622860 is about 11341.2018763445. The cubic root of 128622860 is about 504.7845501235.

The spelling of 128622860 in words is "one hundred twenty-eight million, six hundred twenty-two thousand, eight hundred sixty".