128000822 has 4 divisors (see below), whose sum is σ = 192001236. Its totient is φ = 64000410.

The previous prime is 128000813. The next prime is 128000827. The reversal of 128000822 is 228000821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 228000821 = 17 ⋅13411813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128000827) 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 as a sum of consecutive naturals, namely, 32000204 + ... + 32000207.

It is an arithmetic number, because the mean of its divisors is an integer number (48000309).

Almost surely, 2^128000822 is an apocalyptic number.

128000822 is a deficient number, since it is larger than the sum of its proper divisors (64000414).

128000822 is an equidigital number, since it uses as much as digits as its factorization.

128000822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64000413.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 128000822 is about 11313.7448265373. The cubic root of 128000822 is about 503.9694987630.

Subtracting 128000822 from its reverse (228000821), we obtain a palindrome (99999999).

The spelling of 128000822 in words is "one hundred twenty-eight million, eight hundred twenty-two", and thus it is an aban number.