128622700 has 18 divisors (see below), whose sum is σ = 279111476. Its totient is φ = 51449040.

The previous prime is 128622643. The next prime is 128622701. The reversal of 128622700 is 7226821.

It is not an unprimeable number, because it can be changed into a prime (128622701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 643014 + ... + 643213.

Almost surely, 2^128622700 is an apocalyptic number.

128622700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128622700 is an abundant number, since it is smaller than the sum of its proper divisors (150488776).

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

128622700 is a wasteful number, since it uses less digits than its factorization.

128622700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286241 (or 1286234 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 128622700 is about 11341.1948224162. The cubic root of 128622700 is about 504.7843408150.

The spelling of 128622700 in words is "one hundred twenty-eight million, six hundred twenty-two thousand, seven hundred".